easy chemical reaction experiments to do at home

TOP 10 chemical reactions that you can repeat at home

Safe and spectacular experiments

4. Re­lease of gas

Ma­te­ri­als and equip­ment :

sodi­um bi­car­bon­ate (bak­ing soda);

• Fill a glass 1/3 full of wa­ter.
• Add a tea­spoon of bak­ing soda and a lit­tle vine­gar.
• Light a match and gen­tly low­er it into the glass, not touch­ing the mix­ture.

The match goes out.

Sodi­um bi­car­bon­ate (soda) is a com­pound of the fol­low­ing el­e­ments: sodi­um, hy­dro­gen, car­bon, and oxy­gen.

The re­ac­tion be­tween sodi­um bi­car­bon­ate and vine­gar forms un­sta­ble car­bon­ic acid, which im­me­di­ate­ly de­com­pos­es to wa­ter and car­bon diox­ide. The car­bon diox­ide gas ex­tin­guish­es the flame:

NaH­CO₃ + CH₃­COOH → CH₃­COONa + H₂O + CO₂↑

5. De­struc­tive vine­gar

• Put an eggshell in a glass.
• Fill the glass half full of vine­gar. Ex­am­ine the con­tents af­ter 12 hours.

The eggshell dis­solves in the vine­gar.

Vine­gar is an acidic sub­stance. It has the abil­i­ty to break down sev­er­al sub­stances, such as the cal­ci­um car­bon­ate con­tained in the eggshell:

Ca­CO₃ + 2CH₃­COOH → Ca(CH₃­COO)₂ + CO₂↑ + H₂O

9. Dis­solv­ing poly­styrene in ace­tone

small pieces of poly­styrene;

rub­ber gloves.

• Put on the gloves.
• Fill the bowl half full of ace­tone.
• Low­er the small pieces of poly­styrene into the bowl.

The pieces of poly­styrene dis­ap­pear. Just like this:

Poly­styrene is ex­pand­ed sty­ro­foam and pri­mar­i­ly con­sists of air. This is why it dis­solves so re­mark­ably in ace­tone.

10. In­vis­i­ble ink

piece of pa­per;

cot­ton swab.

• Squeeze some lemon juice into a glass, add a few drops of wa­ter, and mix well.
• Dip a cot­ton swab into the so­lu­tion and write on the pa­per with it. Let the pa­per dry.
• Hold over a burn­ing can­dle.

The text ap­pears.

Lemon juice con­tains acid, which dark­ens at high tem­per­a­tures.

More ex­per­i­ments you can find in our chem­istry sets for kids .

Dozens of experiments you can do at home

One of the most exciting and ambitious home-chemistry educational projects The Royal Society of Chemistry

10 Cool Chemistry Experiments

ThoughtCo / Hilary Allison

• Projects & Experiments
• Chemical Laws
• Periodic Table
• Scientific Method
• Biochemistry
• Physical Chemistry
• Medical Chemistry
• Chemistry In Everyday Life
• Famous Chemists
• Activities for Kids
• Abbreviations & Acronyms
• Weather & Climate
• Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
• B.A., Physics and Mathematics, Hastings College

Chemistry is king when it comes to making science cool. There are many interesting and fun projects to try, but these 10 chemistry experiments might be the coolest.

Whether you want to witness color transformations with copper and nitric acid or create a foam spectacle with hydrogen peroxide and potassium iodide, there's something here to spark curiosity in everyone. There's even a famous chemical reaction that will emit blue light and a characteristic barking or woofing sound.

Copper and Nitric Acid

When you place a piece of copper in nitric acid , the Cu 2+ ions and nitrate ions coordinate to color the solution green and then brownish-green. If you dilute the solution, water displaces nitrate ions around the copper, and the solution changes to blue.

Hydrogen Peroxide with Potassium Iodide

Affectionately known as elephant toothpaste , the chemical reaction between peroxide and potassium iodide shoots out a column of foam. If you add food coloring, you can customize the "toothpaste" for holiday-colored themes.

Any Alkali Metal in Water

Any of the alkali metals will react vigorously in water . How vigorously? Sodium burns bright yellow. Potassium burns violet. Lithium burns red. Cesium explodes. Experiment by moving down the alkali metals group of the periodic table. 

Thermite Reaction

The thermite reaction essentially shows what would happen if iron rusted instantly, rather than over time. In other words, it's making metal burn. If the conditions are right, just about any metal will burn. However, the reaction usually is performed by reacting iron oxide with aluminum:

Fe 2 O 3  + 2Al → 2Fe + Al 2 O 3  + heat and light

If you want a truly stunning display, try placing the mixture inside a block of dry ice and then lighting the mixture.

Coloring Fire

 SEAN GLADWELL / Getty Images

When ions are heated in a flame, electrons become excited and then drop to a lower energy state, emitting photons. The energy of the photons is characteristic of the chemical and corresponds to specific flame colors . It's the basis for the flame test in analytical chemistry , plus it's fun to experiment with different chemicals to see what colors they produce in a fire.

Make Polymer Bouncy Balls

Who doesn't enjoy playing with bouncy balls ? The chemical reaction used to make the balls makes a terrific experiment because you can alter the properties of the balls by changing the ratio of the ingredients.

Make a Lichtenberg Figure

A Lichtenberg figure or "electrical tree" is a record of the path taken by electrons during an electrostatic discharge. It's basically frozen lightning. There are several ways you can make an electrical tree.

Experiment with 'Hot Ice'

Hot ice is a name given to sodium acetate, a chemical you can make by reacting vinegar and baking soda. A solution of sodium acetate can be supercooled​ so that it will crystallize on command. Heat is evolved when the crystals form, so although it resembles water ice, it's hot.

Barking Dog Experiment

The Barking Dog is the name given to a chemiluminescent reaction involving the exothermic combination of either nitrous oxide or nitrogen monoxide with carbon disulfide. The reaction proceeds down a tube, emitting blue light and a characteristic "woof" sound.

Another version of the demonstration involves coating the inside of a clear jug with alcohol and igniting the vapor. The  flame front proceeds down the ​bottle , which also barks.

Dehydration of Sugar

When you react sugar with sulfuric acid , the sugar is violently dehydrated. The result is a growing column of carbon black, heat, and the overwhelming odor of burnt caramel.

Easy Science Experiments

Want something less extravagant but still fun? These easy science experiments are doable with items you likely already have at home—from creating invisible ink with baking soda to making homemade ice cream in a plastic bag.

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• How to Grow Table Salt or Sodium Chloride Crystals
• How to Melt Aluminum Cans at Home
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• Valentine's Day Chemistry
• Thames & Kosmos Chem 3000 Chemistry Kit Review
• Halloween Reaction or Old Nassau Reaction
• How to Do the Color Change Chameleon Chemistry Demonstration

68 Best Chemistry Experiments: Learn About Chemical Reactions

Whether you’re a student eager to explore the wonders of chemical reactions or a teacher seeking to inspire and engage your students, we’ve compiled a curated list of the top 68 chemistry experiments so you can learn about chemical reactions.

While the theories and laws governing chemistry can sometimes feel abstract, experiments bridge the gap between these concepts and their tangible manifestations. These experiments provide hands-on experiences illuminating the intricacies of chemical reactions, molecular structures, and elemental properties.

1. Covalent Bonds

By engaging in activities that demonstrate the formation and properties of covalent bonds, students can grasp the significance of these bonds in holding atoms together and shaping the world around us.

Learn more: Covalent Bonds

2. Sulfuric Acid and Sugar Demonstration

Through this experiment, students can develop a deeper understanding of chemical properties, appreciate the power of chemical reactions, and ignite their passion for scientific exploration.

3. Make Hot Ice at Home

Making hot ice at home is a fascinating chemistry experiment that allows students to witness the captivating transformation of a liquid into a solid with a surprising twist.

4. Make a Bouncing Polymer Ball

This hands-on activity not only allows students to explore the fascinating properties of polymers but also encourages experimentation and creativity.

Learn more: Thought Co

5. Diffusion Watercolor Art

This experiment offers a wonderful opportunity for students to explore the properties of pigments, observe how they interact with water, and discover the mesmerizing patterns and textures that emerge.

Learn more: Diffusion Watercolor Art

6. Exploding Baggie

The exploding baggie experiment is a captivating and dynamic demonstration that students should engage in with caution and under the supervision of a qualified instructor.

Learn more: Exploding Baggie

7. Color Changing Chemistry Clock

This experiment not only engages students in the world of chemical kinetics but also introduces them to the concept of a chemical clock, where the color change acts as a timekeeping mechanism.

Learn more: Color Changing Chemistry Clock

8. Pipe Cleaner Crystal Trees

By adjusting the concentration of the Borax solution or experimenting with different pipe cleaner arrangements, students can customize their crystal trees and observe how it affects the growth patterns.

Learn more: Pipe Cleaner Crystal Trees

9. How To Make Ice Sculptures

Through this experiment, students gain a deeper understanding of the physical and chemical changes that occur when water freezes and melts.

Learn more: Ice Sculpture

10. How to Make Paper

Through this hands-on activity, students gain a deeper understanding of the properties of cellulose fibers and the transformative power of chemical reactions.

Learn more: How to Make Paper

11. Color Changing Chemistry

Color changing chemistry is an enchanting experiment that offers a captivating blend of science and art. Students should embark on this colorful journey to witness the mesmerizing transformations of chemicals and explore the principles of chemical reactions.

12. Gassy Banana

The gassy banana experiment is a fun and interactive way for students to explore the principles of chemical reactions and gas production.

Learn more: Gassy Banana

13. Gingerbread Man Chemistry Experiment

This hands-on activity not only introduces students to the concepts of chemical leavening and heat-induced reactions but also allows for creativity in decorating and personalizing their gingerbread creations.

Learn more: Gingerbread Man Chemistry Experiment

14. Make Amortentia Potion

While the love potion is fictional, this activity offers a chance to explore the art of potion-making and the chemistry behind it.

Learn more: How to Make Amortentia Potion

15. Strawberry DNA Extraction

This hands-on experiment offers a unique opportunity to observe DNA, the building blocks of life, up close and learn about its structure and properties.

16. Melting Snowman

The melting snowman experiment is a fun and whimsical activity that allows students to explore the principles of heat transfer and phase changes.

Learn more: Melting Snowman

17. Acid Base Cabbage Juice

The acid-base cabbage juice experiment is an engaging and colorful activity that allows students to explore the pH scale and the properties of acids and bases.

By extracting the purple pigment from red cabbage leaves and creating cabbage juice, students can use this natural indicator to identify and differentiate between acidic and basic substances.

Learn more: Acid Base Cabbage Juice

18. Magic Milk

The magic milk experiment is a mesmerizing and educational activity that allows students to explore the concepts of surface tension and chemical reactions.

By adding drops of different food colors to a dish of milk and then introducing a small amount of dish soap, students can witness a captivating display of swirling colors and patterns.

Learn more: Magic Milk

19. Melting Ice with Salt and Water

Through this hands-on activity, students can gain a deeper understanding of the science behind de-icing and how different substances can influence the physical properties of water.

Learn more: Melting Ice with Salt and Water

20. Barking Dog Chemistry Demonstration

The barking dog chemistry demonstration is an exciting and visually captivating experiment that showcases the principles of combustion and gas production.

21. How to Make Egg Geodes

Making egg geodes is a fascinating and creative chemistry experiment that students should try. By using common materials like eggshells, salt, and food coloring, students can create their own beautiful geode-like crystals.

Learn more: How to Make Egg Geodes

22. Make Sherbet

This experiment not only engages the taste buds but also introduces concepts of acidity, solubility, and the chemical reactions that occur when the sherbet comes into contact with moisture.

Learn more: Make Sherbet

23. Hatch a Baking Soda Dinosaur Egg

As the baking soda dries and hardens around the toy, it forms a “shell” resembling a dinosaur egg. To hatch the egg, students can pour vinegar onto the shell, causing a chemical reaction that produces carbon dioxide gas.

Learn more: Steam Powered Family

24. Chromatography Flowers

By analyzing the resulting patterns, students can gain insights into the different pigments present in flowers and the science behind their colors.

Learn more: Chromatography Flowers

25. Turn Juice Into Solid

Turning juice into a solid through gelification is an engaging and educational chemistry experiment that students should try. By exploring the transformation of a liquid into a solid, students can gain insights of chemical reactions and molecular interactions.

Learn more: Turn Juice into Solid

26. Bouncy Balls

Making bouncy balls allows students to explore the fascinating properties of polymers, such as their ability to stretch and rebound.

 27. Make a Lemon Battery

Creating a lemon battery is a captivating and hands-on experiment that allows students to explore the fundamentals of electricity and chemical reactions.

28. Mentos and Soda Project

The Mentos and soda project is a thrilling and explosive experiment that students should try. By dropping Mentos candies into a bottle of carbonated soda, an exciting eruption occurs.

29. Alkali Metal in Water

The reaction of alkali metals with water is a fascinating and visually captivating chemistry demonstration.

30. Rainbow Flame

The rainbow flame experiment is a captivating and visually stunning chemistry demonstration that students should explore.

31. Sugar Yeast Experiment

This experiment not only introduces students to the concept of fermentation but also allows them to witness the effects of a living organism, yeast, on the sugar substrate.

32. The Thermite Reaction

The thermite reaction is a highly energetic and visually striking chemical reaction that students can explore with caution and under proper supervision.

This experiment showcases the principles of exothermic reactions, oxidation-reduction, and the high temperatures that can be achieved through chemical reactions.

33. Polishing Pennies

Polishing pennies is a simple and enjoyable chemistry experiment that allows students to explore the concepts of oxidation and cleaning methods.

34. Elephant Toothpaste

The elephant toothpaste experiment is a thrilling and visually captivating chemistry demonstration that students should try with caution and under the guidance of a knowledgeable instructor.

35. Magic Potion

Creating a magic potion is an exciting and imaginative activity that allows students to explore their creativity while learning about the principles of chemistry.

36. Color Changing Acid-Base Experiment

Through the color changing acid-base experiment, students can gain a deeper understanding of chemical reactions and the role of pH in our daily lives.

Learn more: Color Changing Acid-Base Experiment

37. Fill up a Balloon

Filling up a balloon is a simple and enjoyable physics experiment that demonstrates the properties of air pressure. By blowing air into a balloon, you can observe how the balloon expands and becomes inflated.

38. Jello and Vinegar

The combination of Jello and vinegar is a fascinating and tasty chemistry experiment that demonstrates the effects of acid on a gelatin-based substance.

Learn more: Jello and Vinegar

39. Vinegar and Steel Wool Reaction

This experiment not only provides a visual demonstration of the oxidation process but also introduces students to the concept of corrosion and the role of acids in accelerating the process.

Learn more: Vinegar and Steel Wool Reaction

40. Dancing Rice

The dancing rice experiment is a captivating and educational demonstration that showcases the principles of density and buoyancy.

By pouring a small amount of uncooked rice into a clear container filled with water, students can witness the rice grains moving and “dancing” in the water.

Learn more: Dancing Rice

41. Soil Testing Garden Science

Soil testing is a valuable and informative experiment that allows students to assess the composition and properties of soil.

By collecting soil samples from different locations and analyzing them, students can gain insights into the nutrient content, pH level, and texture of the soil.

Learn more: Soil Testing Garden Science

42. Heat Sensitive Color Changing Slime

Creating heat-sensitive color-changing slime is a captivating and playful chemistry experiment that students should try.

Learn more: Left Brain Craft Brain

43. Experimenting with Viscosity

Experimenting with viscosity is an engaging and hands-on activity that allows students to explore the flow properties of liquids.

Viscosity refers to a liquid’s resistance to flow, and this experiment enables students to investigate how different factors affect viscosity.

Learn more: Experimenting with Viscosity

44. Rock Candy Science

Rock candy science is a delightful and educational chemistry experiment that students should try. By growing their own rock candy crystals, students can learn about crystal formation and explore the principles of solubility and saturation.

Learn more: Rock Candy Science

45. Baking Soda vs Baking Powder

Baking soda and baking powder have distinct properties that influence the leavening process in different ways.

This hands-on experiment provides a practical understanding of how these ingredients interact with acids and moisture to create carbon dioxide gas.

46. Endothermic and Exothermic Reactions Experiment

The endothermic and exothermic reactions experiment is an exciting and informative chemistry exploration that students should try.

By observing and comparing the heat changes in different reactions, students can gain a deeper understanding of energy transfer and the concepts of endothermic and exothermic processes.

Learn more: Education.com

47. Diaper Chemistry

By dissecting a diaper and examining its components, students can uncover the chemical processes that make diapers so effective at absorbing and retaining liquids.

Learn more: Diaper Chemistry

48. Candle Chemical Reaction

The “Flame out” experiment is an intriguing and educational chemistry demonstration that students should try. By exploring the effects of a chemical reaction on a burning candle, students can witness the captivating moment when the flame is extinguished.

49. Make Curds and Whey

This experiment not only introduces students to the concept of acid-base reactions but also offers an opportunity to explore the science behind cheese-making.

Learn more: Tinkerlab

50. Grow Crystals Overnight

By creating a supersaturated solution using substances like epsom salt, sugar, or borax, students can observe the fascinating process of crystal growth. This experiment allows students to explore the principles of solubility, saturation, and nucleation.

Learn more: Grow Crystals Overnight

51. Measure Electrolytes in Sports Drinks

The “Measure Electrolytes in Sports Drinks” experiment is an informative and practical chemistry activity that students should try.

By using simple tools like a multimeter or conductivity probe, students can measure the electrical conductivity of different sports drinks to determine their electrolyte content.

52. Oxygen and Fire Experiment

The oxygen and fire experiment is a captivating and educational chemistry demonstration that students should try. By observing the effects of oxygen on a controlled fire, students can witness the essential role of oxygen in supporting combustion.

53. Electrolysis Of Water

The electrolysis of water experiment is a captivating and educational chemistry demonstration that students should try.

Learn more: Electrolysis Of Water

54. Expanding Ivory Soap

The expanding Ivory Soap experiment is a fun and interactive chemistry activity that students should try. By placing a bar of Ivory soap in a microwave, students can witness the remarkable expansion of the soap as it heats up.

Learn more: Little Bins Little Hands

55. Glowing Fireworks

This experiment not only introduces students to the principles of pyrotechnics and combustion but also encourages observation, critical thinking, and an appreciation for the physics and chemistry behind.

Learn more: Glowing Fireworks

56. Colorful Polymer Chemistry

Colorful polymer chemistry is an exciting and vibrant experiment that students should try to explore polymers and colorants.

By combining different types of polymers with various colorants, such as food coloring or pigments, students can create a kaleidoscope of colors in their polymer creations.

Learn more: Colorful Polymer Chemistry

57. Sulfur Hexafluoride- Deep Voice Gas

This experiment provides a firsthand experience of how the density and composition of gases can influence sound transmission.

It encourages scientific curiosity, observation, and a sense of wonder as students witness the surprising transformation of their voices.

58. Liquid Nitrogen Ice Cream

Liquid nitrogen ice cream is a thrilling and delicious chemistry experiment that students should try. By combining cream, sugar, and flavorings with liquid nitrogen, students can create ice cream with a unique and creamy texture.

59. White Smoke Chemistry Demonstration

The White Smoke Chemistry Demonstration provides an engaging and visually captivating experience for students to explore chemical reactions and gases. By combining hydrochloric acid and ammonia solutions, students can witness the mesmerizing formation of white smoke.

60. Nitrogen Triiodide Chemistry Demonstration

The nitrogen triiodide chemistry demonstration is a remarkable and attention-grabbing experiment that students should try under the guidance of a knowledgeable instructor.

By reacting iodine crystals with concentrated ammonia, students can precipitate nitrogen triiodide (NI3), a highly sensitive compound.

61. Make a Plastic- Milk And Vinegar Reaction Experiment

Through the “Make a Plastic – Milk and Vinegar Reaction” experiment, students can gain a deeper understanding of the chemistry behind plastics, environmental sustainability, and the potential of biodegradable materials.

Learn more: Rookie Parenting

62. Eno and Water Experiment

This experiment not only introduces students to acid-base reactions but also engages their senses as they witness the visible and audible effects of the reaction.

63. The Eternal Kettle Experiment

By filling a kettle with alcohol and igniting it, students can investigate the behavior of the alcohol flame and its sustainability.

64. Coke and Chlorine Bombs

Engaging in this experiment allows students to experience the wonders of chemistry firsthand, making it an ideal choice to ignite their curiosity and passion for scientific exploration.

65. Set your Hand on Fire

This experiment showcases the fascinating nature of combustion and the science behind fire.

By carefully following proper procedures and safety guidelines, students can witness firsthand how the sanitizer’s high alcohol content interacts with an open flame, resulting in a brief but captivating display of controlled combustion.

66. Instant Ice Experiments

The Instant Ice Experiment offers an engaging and captivating opportunity for students to explore the wonders of chemistry and phase changes.

By using simple household ingredients, students can witness the fascinating phenomenon of rapid ice formation in just a matter of seconds.

67. Coke Cans in Acid and Base

Engaging in this experiment allows students to gain a deeper understanding of the chemical properties of substances and the importance of safety protocols in scientific investigations.

68. Color Changing Invisible Ink

The Color Changing Invisible Ink experiment offers an intriguing and fun opportunity for students to explore chemistry and learn about the concept of chemical reactions.

Learn more: Research Parent

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65 Amazing Chemistry Experiments for Kids

Chemistry is so much fun, and we have tons of cool chemistry experiments to share with you. Like our awesome physics experiments , we decided we needed to put together a list of fun chemistry projects kids can do at home or in the classroom. Check out these examples of easy chemical reactions below!

65 Chemistry Experiments You Want To Try

We have divided our chemistry experiments below into chemical reactions, acids and bases, chromatography, solutions, polymers, and crystals. Some chemistry experiments also explore concepts in physics .

Chemical Reactions

A chemical reaction is a process where two or more substances react together to form a new chemical substance. This might look like a gas formed, cooking or baking, milk souring, etc.

Sometimes a physical change occurs, like our popcorn experiment or melting crayons, rather than a chemical change . However, these experiments below are all great examples of chemical change, where a new substance is formed.

CHECK OUT: Examples Of Physical Change and Chemical Change Examples

Can chemical reactions happen safely at home or in the classroom? Absolutely! This is one of the most fun parts of chemistry for kids, and you will find lots of ideas below for safe chemical reactions you can do with your junior scientists.

Acids And Bases

Acids and bases are important for many chemical processes in everyday life. An acid has hydrogen ions and can donate protons. Acids taste sour and have a pH from 0 to 7. Vinegar and citric acid are examples of acids.

Bases are molecules that can accept hydrogen ions. They have a pH higher than seven and can taste bitter. Sodium bicarbonate or baking soda and ammonia are examples of bases. Learn more about the pH scale.

Vinegar and baking soda experiments are classic acid-base reactions. You’ll also find experiments that use an acid such as vinegar or lemon juice. We have so many fun variations that your kids will love to try! Check out these acid-base chemistry experiments below.

Chromatography

Chromatography is a technique that involves the separation of a mixture into its parts so you can see each one individually.

A solution is a mixture of 2 or more solutes dissolved in a solvent up to its solubility limit. It most often refers to liquids, but solutions, gases, and solids are also possible. A solution will have its components evenly distributed throughout the mixture.

Chemistry experiments involving solutions are great for kids. Gather liquids you commonly find in your kitchen, oil, water, detergent, etc., and explore what dissolves.

A polymer is a huge molecule made of many smaller molecules layered together in repeating patterns called monomers. Putty, slime, and cornstarch are all examples of polymers. Learn more about the science of slime polymers .

Making slime is great for at-home chemistry! It’s also a classic middle school science demonstration for the classroom. Here are a few of our favorite slime recipes to get you started.

non-Newtonian Fluids

Learn how to make oobleck ! Explore polymers with a simple cornstarch and water mixture.

A crystal is a solid material with a highly ordered internal structure of atoms, molecules, or ions held together by chemical bonds. Grow crystals and observe them by mixing a super-saturated solution and leaving it for several days to let the crystals form.

Simple to grow and taste-safe, a sugar crystals experiment is more accessible for younger kids, but you can also try growing borax crystals for older kids.

Check out our fun theme variations of growing crystals too!

Chemistry For Preschoolers

Let’s keep it basic for our younger or junior scientists! Chemistry is all about how different materials are put together and what they are made up of, like atoms and molecules.

What can you do with your youngest scientists? While working 1-1 or in a very small group is ideal, you can explore chemistry in a few fun ways that don’t require a lengthy setup or a lot of directions to follow. Do NOT overcomplicate the ideas!

Take, for example, our very first baking soda science experiment (age 3). So simple to set up, but so lovely to watch the amazement on my son’s face.

Check out these fun ways for preschoolers to explore science…

• Make liquid mixtures! Mix water and oil in a jar, let it rest, and observe what happens.
• Make solid mixtures! Mix two solid items and observe the changes!
• Mix a solid and a liquid! Add ice to a drink and observe the changes!
• Make a reaction! Set up a tray with baking soda in small cups and colored vinegar in small cups with pipettes. Mix and observe!
• Make oobleck ! Mix cornstarch and water for a weird and messy science activity.
• Explore characteristics of things! Use new science words to describe how different materials feel. Explore squishy, hard, rough, smooth, wet, etc…

Much of preschool science is about you sharing new experiences with them that are relatable and simple. A sk questions, share new words, and offer verbal prompts to get them to communicate with you about what they see!

Chemistry Science Fair Projects

Science projects are excellent tools for older kids to demonstrate their knowledge of science. They can also be used in various environments, including classrooms, homeschools, and groups.

Kids can take everything they have learned about using the scientific method , stating a hypothesis, choosing variables , and analyzing and presenting data.

Want to turn one of these fun chemistry experiments into a science project? Then you will want to check out these helpful resources.

• Easy Science Fair Projects
• Science Project Tips From A Teacher
• Science Fair Board Ideas

More Helpful Science Resources

Here are a few resources that will help you introduce science more effectively to your kiddos or students and feel confident yourself when presenting materials. You’ll find helpful free printables throughout.

• Best Science Practices (as it relates to the scientific method)
• Science Vocabulary
• 8 Science Books for Kids
• All About Scientists
• Free Science Worksheets
• Science Supplies List
• Science Tools for Kids
• Scientific Method for Kids
• Citizen Science Guide
• Join us in the Club

Printable Science Projects For Kids

If you’re looking to grab all of our printable science projects in one convenient place plus exclusive worksheets and bonuses like a STEAM Project pack, our Science Project Pack is what you need! Over 300+ Pages!

• 90+ classic science activities  with journal pages, supply lists, set up and process, and science information.  NEW! Activity-specific observation pages!
• Best science practices posters  and our original science method process folders for extra alternatives!
• Be a Collector activities pack  introduces kids to the world of making collections through the eyes of a scientist. What will they collect first?
• Know the Words Science vocabulary pack  includes flashcards, crosswords, and word searches that illuminate keywords in the experiments!
• My science journal writing prompts  explore what it means to be a scientist!!
• Bonus STEAM Project Pack:  Art meets science with doable projects!
• Bonus Quick Grab Packs for Biology, Earth Science, Chemistry, and Physics

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45 Cool Chemistry Experiments, Demos, and Science Fair Projects

Don’t forget your safety equipment!

Bunsen burners, colorful chemicals, and the possibility of a (controlled) explosion or two? Everybody loves chemistry experiments! We’ve rounded up the best activities, demos, and chemistry science fair projects for kids and teens. Try them in the classroom or at home.

Easy Chemistry Experiments and Activities for All Ages

Chemistry science fair projects.

These chemistry experiments and activities are all easy to do using simple supplies you probably already have. Families can try them at home, or teachers and students can do them together in the classroom.

Mix up some magic milk

Kids love this colorful experiment, which explores the concept of surface tension. This is one of our favorite chemistry experiments to try at home, since the supplies are so basic and the results are so cool!

Taste the Rainbow

Teach your students about diffusion while creating a beautiful and tasty rainbow. You’ll definitely want to have extra Skittles on hand so your class can enjoy a few as well!

Learn more: Skittles Diffusion

Crystallize sweet treats

Crystal science experiments teach kids about supersaturated solutions. This one is easy to do at home, and the results are absolutely delicious!

Learn more: Candy Crystals

Make elephant-sized toothpaste

This fun project uses yeast and a hydrogen peroxide solution to create overflowing “elephant toothpaste.” You can also add an extra fun layer by having kids create toothpaste wrappers for their plastic bottles.

Blow the biggest bubbles you can

Add a few simple ingredients to dish soap solution to create the largest bubbles you’ve ever seen! Kids learn about surface tension as they engineer these bubble-blowing wands.

Learn more: Giant Soap Bubbles

Demonstrate the “magic” leakproof bag

So simple and so amazing! All you need is a zip-top plastic bag, sharp pencils, and some water to blow your kids’ minds. Once they’re suitably impressed, teach them how the “trick” works by explaining the chemistry of polymers.

Learn more: Leakproof Bag

Use apple slices to learn about oxidation

Have students make predictions about what will happen to apple slices when immersed in different liquids, then put those predictions to the test! Finally, have them record their observations.

Learn more: Apple Oxidation

Float a marker man

Their eyes will pop out of their heads when you “levitate” a stick figure right off the table. This experiment works due to the insolubility of dry-erase marker ink in water, combined with the lighter density of the ink.

Learn more: Floating Marker Man

Discover density with hot and cold water

There are a lot of easy science experiments you can do with density. This one is extremely simple, involving only hot and cold water and food coloring, but the visuals make it appealing and fun.

Learn more: Layered Water

Layer more liquids

This density demo is a little more complicated, but the effects are spectacular. Slowly layer liquids like honey, dish soap, water, and rubbing alcohol in a glass. Kids will be amazed when the liquids float one on top of the other like magic (except it is really science).

Learn more: Layered Liquids

Grow a carbon sugar snake

Easy science experiments can still have impressive results. This eye-popping chemical reaction demonstration only requires simple supplies like sugar, baking soda, and sand.

Learn more: Carbon Sugar Snake

Make homemade bouncy balls

These homemade bouncy balls are easy to make since all you need is glue, food coloring, borax powder, cornstarch, and warm water. You’ll want to store them inside a container like a plastic egg because they will flatten out over time.

Learn more: Make Your Own Bouncy Balls

Create eggshell chalk

Eggshells contain calcium, the same material that makes chalk. Grind them up and mix them with flour, water, and food coloring to make your very own sidewalk chalk.

Learn more: Eggshell Chalk

Make naked eggs

This is so cool! Use vinegar to dissolve the calcium carbonate in an eggshell to discover the membrane underneath that holds the egg together. Then, use the “naked” egg for another easy science experiment that demonstrates osmosis .

Learn more: Naked Egg Experiment

Turn milk into plastic

This sounds a lot more complicated than it is, but don’t be afraid to give it a try. Use simple kitchen supplies to create plastic polymers from plain old milk. Sculpt them into cool shapes when you’re done.

Test pH using cabbage

Teach kids about acids and bases without needing pH test strips. Simply boil some red cabbage and use the resulting water to test various substances—acids turn red and bases turn green.

Learn more: Cabbage pH

Clean some old coins

Use common household items to make old oxidized coins clean and shiny again in this simple chemistry experiment. Ask kids to predict (hypothesize) which will work best, then expand the learning by doing some research to explain the results.

Learn more: Cleaning Coins

Blow up a balloon (without blowing)

Chances are good you probably did easy science experiments like this when you were in school yourself. This well-known activity demonstrates the reactions between acids and bases. Fill a bottle with vinegar and a balloon with baking soda. Fit the balloon over the top, shake the baking soda down into the vinegar, and watch the balloon inflate.

Learn more: Balloon Experiments

Assemble a DIY lava lamp

This 1970s trend is back—as an easy science experiment! This activity combines acid/base reactions with density for a totally groovy result.

Explore how sugary drinks affect teeth

The calcium content of eggshells makes them a great stand-in for teeth. Use eggs to explore how soda and juice can stain teeth and wear down the enamel. Expand your learning by trying different toothpaste and toothbrush combinations to see how effective they are.

Learn more: Sugar and Teeth Experiment

Mummify a hot dog

If your kids are fascinated by the Egyptians, they’ll love learning to mummify a hot dog. No need for canopic jars ; just grab some baking soda and get started.

Extinguish flames with carbon dioxide

This is a fiery twist on acid-base experiments. Light a candle and talk about what fire needs in order to survive. Then, create an acid-base reaction and “pour” the carbon dioxide to extinguish the flame. The CO2 gas acts like a liquid, suffocating the fire.

Send secret messages with invisible ink

Turn your kids into secret agents! Write messages with a paintbrush dipped in lemon juice, then hold the paper over a heat source and watch the invisible become visible as oxidation goes to work.

Learn more: Invisible Ink

Set popcorn dancing

This is a fun version of the classic baking soda and vinegar experiment, perfect for the younger crowd. The bubbly mixture causes popcorn to dance around in the water.

Learn more: Dancing Popcorn Experiment

Shoot a soda geyser sky-high

You’ve always wondered if this really works, so it’s time to find out for yourself! Kids will marvel at the chemical reaction that sends diet soda shooting high in the air when Mentos are added.

Learn more: Mentos and Coke Experiment

All of these chemistry experiments are perfect for using the scientific method. Form a hypothesis, alter the variables, and then observe the results! You can simplify these projects for younger kids, or add more complexity for older students.

Break apart covalent bonds

Difficulty: Medium / Materials: Medium

Break the covalent bond of H 2 O into H and O with this simple experiment. You only need simple supplies for this one. Turn it into a science fair project by changing up the variables—does the temperature of the water matter? What happens if you try this with other liquids?

Learn more: Breaking Covalent Bonds

Measure the calories in various foods

Are the calorie counts on your favorite snacks accurate? Build your own calorimeter and find out! This kit from Home Science Tools has all the supplies you’ll need.

Detect latent fingerprints

Forensic science is engrossing and can lead to important career opportunities too. Explore the chemistry needed to detect latent (invisible) fingerprints, just like they do for crime scenes!

Learn more: Fingerprints Project

Use Alka-Seltzer to explore reaction rate

Difficulty: Easy / Materials: Easy

Tweak this basic concept to create a variety of high school chemistry science fair projects. Change the temperature, surface area, pressure, and more to see how reaction rates change.

Determine whether sports drinks really have more electrolytes than other beverages

Difficulty: Medium / Materials: Advanced

Are those pricey sports drinks really worth it? Try this experiment to find out. You’ll need some special equipment for this one; buy a complete kit at Home Science Tools .

Turn flames into a rainbow

You’ll need to get your hands on a few different chemicals for this experiment, but the wow factor will make it worth the effort. Make it a science project by seeing if different materials, air temperature, or other factors change the results.

Discover the size of a mole

The mole is a key concept in chemistry, so it’s important to ensure students really understand it. This experiment uses simple materials like salt and chalk to make an abstract concept more concrete. Make it a project by applying the same procedure to a variety of substances, or determining whether outside variables have an effect on the results.

Learn more: How Big Is a Mole?

Cook up candy to learn mole and molecule calculations

This edible experiment lets students make their own peppermint hard candy while they calculate mass, moles, molecules, and formula weights. Tweak the formulas to create different types of candy and make this into a sweet science fair project!

Learn more: Candy Chemistry

Make soap to understand saponification

Take a closer look at an everyday item: soap! Use oils and other ingredients to make your own soap, learning about esters and saponification. Tinker with the formula to find one that fits a particular set of parameters.

Learn more: Saponification

Uncover the secrets of evaporation

Explore the factors that affect evaporation, then come up with ways to slow them down or speed them up for a simple science fair project.

Learn more: Evaporation

More Chemistry Experiment Science Fair Ideas

These questions and prompts can spark ideas for unique chemistry experiments:

• Compare the properties of sugar and artificial sweeteners.
• Explore the impact of temperature, concentration, and seeding on crystal growth.
• Test various antacids on the market to find the most effective product.
• What is the optimum temperature for yeast production when baking bread from scratch?
• Compare the vitamin C content of various fruits and vegetables.
• How does temperature affect enzyme-catalyzed reactions?
• Investigate the effects of pH on an acid-base chemical reaction.
• Devise a new natural way to test pH levels (such as cabbage leaves).
• What’s the best way to slow down metal oxidation (the form of rust)?
• How do changes in ingredients and method affect the results of a baking recipe?

Like these chemistry experiments? Don’t miss STEM Activities for Kids of All Ages and Interests .

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8 Easy Chemistry Experiments At Home (Get a Great Reaction!)

If you want to have some fun with chemistry at home, there are three main ways to go about it. You can buy a chemistry set, subscribe to a subscription box, or find some instructions and use household items. However you go about it, chemistry is a great way to get kids excited about chemistry and science in general.

Related post: Best STEM Subscription Box for Kids (Ultimate Guide 2024)

Chemistry Sets and Subscription Boxes

Before we dive into easy experiments, you can do with things you’ll probably have at home. I just wanted to talk a little bit about your other options.

Chemistry sets can be an excellent investment. They come with equipment that you can reuse over and over. It’s a lot cheaper than having to replace your drinking glasses and measuring jugs because the kids keep using them for chemistry experiments! They also come with instructions on a range of experiments that you can try. If you’ve done a few of the experiments below and are looking for something more, a chemistry set can be a really good option. There are ones aimed at young kids all the way up to teenagers .

Another great option to consider is subscription boxes. These are great for extending learning and keeping kids entertained and engaged for a more extended period. There are loads of great options to choose from. But, when it comes to chemistry, you really can’t go wrong with MEL Science . They have two subscription levels, so you can get a big box or a small one each month. Because everything is in the box, it really takes all the planning and hunting for ingredients out of the equation.

Experiments Using Household Items

If you don’t have a science kit on hand and are looking for something quick and easy to try at home, then these are the experiments you should try. Most of these use items that you will probably have at home, although a few might require you to get a little creative or grab the odd thing the next time you go to the shops.

Chromatography

Chromatography is a technique used in chemistry. It lets you find out what’s inside chemicals. In this version from Fizzics Education, you’ll see what colors are mixed up inside felt tip pens. It’s a straightforward experiment to carry out. All you need is some paper towels, felt tips, and a glass of water.

This is a simple version of this experiment, but there are some easy ways to make it more interesting or scientific. One way to extend this experiment is to try the same technique but using your favorite sweets’ colorings.

For instance, sweets like M&Ms, Skittles, and Smarties all have food coloring on their outside. You can get a sample of this coloring by sitting the candy in a small amount of water. Then you use the colored water in the same way as the felt tip pens.

To add a bit of rigor and math to the experiment, you need a pencil and a ruler. Instead of drawing a line of felt tip, you draw a line with a pencil. Then put a spot of the felt tip on the pencil line. When you take the paper out, you mark a second pencil line to show how high the water went.

By measuring the distance, each of the colors went and the distance the water went, you can calculate something called the retention factor. The retention factor will be unique for different dyes. To find the retention factor, you take the distance your sample travels and divide it by the length the solvent (water in this case) traveled. You can use this number to see if the same dye is used in different pens.

Pop Rockets

This is one of my favorite chemistry experiments for kids. It does get a little messy, so make sure you have some cloths on hand. Alternatively, you can do it outside to make it a little easier to clean up. Steve Spangler Science has some great instructions to follow.

In their version, they use an old film canister. But these can be a bit hard to get hold of these days since everything is digital. Some good alternatives that work well include empty glue stick containers. It’s also worth keeping your eye out for any food containers with push-on lids, as these can work well. There are always a lot of good options around Halloween, Christmas, and Easter – the snack size containers tend to be pretty good options.

The reason I love this experiment is that it’s a lot of fun. There’s the excitement of the pop and watching the canister fly. But, there are also a lot of opportunities to turn this into a real investigation. You can try changing the volumes of liquid or the type of liquid. You can find the best mix to make the biggest noise, the loudest pop, or the perfect mix to make it pop in precisely 8 seconds.

Make Oobleck Dance!

Oobleck is the name that’s been given to an awesome type of slime that you can make at home. If it sounds like something out of Dr. Suess, that’s because it is. This slime is just a mix of cornstarch and water, so it’s pretty easy to make. These instructions from Housing A Forest are pretty good.

What’s cool about Oobleck is that it’s a Non-Newtonian solid. That means that it behaves a little differently than you might expect. For instance, when you try to stir it quickly, it gets hard and almost solid. If you run your fingers through it slowly, it flows like runny syrup.

Now just playing with this stuff is fun, but if you have a speaker to hand, you can do something even cooler. In the guide from Housing A Forest, they suggest using a subwoofer and a cookie sheet. The speaker’s vibrations make the Oobleck bounce around and switch from a solid to a liquid to the beat of the music.

If you have an old speaker that you don’t mind breaking, you can wrap the speaker in saran wrap and put the Oobleck straight onto that. It works a lot better, but if you don’t cover the speaker correctly, it can break.

Make Rubber Eggs

Eggs are an excellent ingredient for science experiments. This experiment from 3P Learning lets you turn a hardboiled egg into a bouncy rubber one. To do this, all you need to do is soak it in vinegar for a day or so. This will dissolve the calcium carbonate of the eggshell. When it’s done, you’ll be able to rub off the tough outer shell.

Without the shell, you’ll be left with the membrane that lines the shell. This membrane helps hold the egg together. This membrane is strong enough to drop the egg onto a surface from a reasonable height, and it will bounce back without falling apart.

The harder your egg is, the less it will bounce. If you want a mix between bounciness and minimal potential for mess, then you’ll want to aim for a soft boiled egg. But, if you don’t mind the mess, try a raw egg. You remove the shell in the same way. When it comes off, you get a peek inside the raw egg. Because it’s raw, it’s squishy and bounces better. Of course, if you drop it from high enough, it will break. When you do this, you’ll find the stretchy membrane, which is pretty cool to feel.

Lemony Eruption

I’m sure you’ve all done the classic volcano eruption with baking soda and vinegar. This is a twist on that experiment. It takes advantage of the fact that lemons are already full of natural citric acid. Here are some great instructions from Babble Dabble Do. They have some handy tips on how to make the most out of each lemon. The great thing about this version is that your room will smell lovely and lemony for the rest of the day.

If you want to extend this, you try investigating which other fruits this would work with. You could explore a whole citric family of volcanoes.

Concoct Some Invisible Ink

Write Secret Messages With Invisible Ink! by Science Buddies

Making invisible ink is really easy. There is some fun chemistry behind how it works. As a bonus, once your kids get the hang of it, they’ll have loads of fun sending coded messages. It’s a great way to keep them entertained.

This great recipe from Thoughtco can be revealed using two different methods. If you have a safe and controllable heat source, you can hold the paper up to that. Ironing the paper works as well, although that’s best left to adults. Otherwise, you can use purple grape juice to reveal the message. If you paint over the page with grape juice, the message will show up in a different color.

If sending secret messages isn’t appealing to your kids, you could challenge them to create something artistic with this technique. The only limit is their imagination.

If you’ve done any chemistry experiments for kids, then you probably know that an acid + baking soda makes for an awesome fizzy experiment. I’ve seen this used in many different ways, but this version from STEAM powered family is one of the best.

In this experiment/activity, you encase small dinosaur toys in a paste made of baking soda and water. By adding food coloring, you can create multicolored eggs. You can even hide glitter inside for an added surprise. When made, you freeze the eggs for about an hour, so they are set hard.

To hatch the eggs, you give your kids syringes and a cup of vinegar. They can then apply the vinegar wherever they want to discover what’s hiding inside the eggs. Just remember to place the eggs in an easy to wash container with reasonably high sides.

Fireworks Alternative

I love fireworks, but I feel guilty about enjoying them because they are an environmental disaster. So, whenever bonfire night rolls around, I always set this up to have some fun and color in our home without having to damage the environment. It’s not quite as good as fireworks, but it’s pretty cool never-the-less.

All you need is:

• Oil – any sort will do. Cheap vegetable oil is just fine
• Food coloring (The liquid kind, not gel)
• Droppers (medicine syringes work well too)
• A clear, tall jar – a mason jat is perfect

To get the magic going, all you need to do is fill your jar ¾ full with warm water. Then add a good layer of oil on top. About an inch deep is plenty. Then you use your dropper to drip food coloring into the jar.

At first, the food coloring will sit at the interface between the oil and water. Then all of a sudden, it will drop through, leaving a trail of color behind it in the water. It looks impressive if you do lots of drops of different colors and then sit back and watch as they drop through the liquids.

Eventually, your water will turn a muddy, muddle color. But, this is such an easy experiment that you can wash out your jar and try again.

Just a little not to say that if you can’t get hold of a dropper or syringe then you can just drip the food coloring from the bottle. As long as you only put in small amounts at a time it does still work.

If you want to extend the fun, keep the oil and some of the colored water when you pour out the container. You want to have more oil than water this time, so I suggest moving them to a second smaller bottle. Then if you add an Alka-Seltzer tablet, you’ve got a homemade lava lamp. To get the best effect, stand your lava lamp bottle on top of a light.

Frequently Asked Questions

What are the most useful household ingredients for chemistry experiments.

When it comes to chemistry experiments, having the right ingredients makes all the difference. If you like explosions, then you’ll probably want to have a good supply of baking soda and vinegar on hand. Other common ingredients include ice, food coloring, citric acid, cornflour, and borax.

If you’re planning on doing lots of experiments, you might want to have a clear measuring jug and a few clear bowls of glasses that you don’t mind sacrificing.

Is cooking chemistry?

Absolutely! There is loads of chemistry behind making food taste great. If you like a perfectly browned steak, then you’re a fan of the Maillard reaction. If you like sweets and desserts, then you’re benefiting from the careful balance of ingredients and use of temperature needed to create the textures and flavor you love.

There is a whole field of science called food science, which is a specific field of chemistry. A great introduction to this field is to experiment with the ratio of ingredients in a simple recipe. You’ll learn what effect the different ingredients have on the outcome. Alternatively, you could make a sourdough starter.

What is the easiest science project?

All of the experiments on this list are pretty easy to try. The chromatography experiment is probably the one that has the most common equipment and is pretty hard to mess up. The fireworks alternative is also an easy experiment that looks great.

Sandy is an experienced STEM educator, having spent a decade teaching Physics. She also loves to volunteer at local STEM fairs to show kids, especially girls, how awesome it is. She is so passionate about science that one science degree wasn’t enough and she decided to complete a second part-time, while working.

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Science Fun

Chemical Reaction Science Experiments

Easy chemical reaction science experiments you can do at home! Click on the experiment image or the view experiment link below for each experiment on this page to see the materials needed and procedure. Have fun trying these experiments at home or use them for SCIENCE FAIR PROJECT IDEAS.

Secret Message:

Turn A Penny Green:

Make A Blueish-Green Compound

Rocket Boat:

Shiny Stuff:

Crazy Chalk:

Dancing Rice:

These Grains Of Rice Have Some Moves

Bubbling Slime:

Rubber Egg:

Make A Homemade Hand Warmer:

Making A Volcano:

Acids and Bases Can Erupt in Your Faces

Orange Fizz:

Easy Film Canister Rocket: