Easy Chemistry Experiments You Can Do at Home

Learning Science Is Fun

Want to do science but don't have your own laboratory? Don't worry. This list of science activities will allow you to do experiments and projects with materials you likely have in your cupboards already.

Let's start out by making slime...

Make Slime

Alter the consistency of slime by changing the ratio of ingredients
Dorling Kindersley / Getty Images

You don't need to have esoteric chemicals and a lab to have a good time with chemistry. Yes, your average fourth grader can make slime. However, that doesn't mean it's any less fun when you're older.

Make a Borax Snowflake

Borax crystal snowflakes are safe and easy to grow

Anne Helmenstine

Making a borax snowflake is a crystal-growing project that is safe and easy enough for kids. You can make shapes other than snowflakes, and you can color the crystals. As a side note, if you use these as Christmas decorations and store them, the borax is a natural insecticide and will help keep your long-term storage area pest-free. If they develop a white precipitant, you can lightly rinse them (don't dissolve too much crystal). Did I mention the snowflakes sparkle really nicely?

Make a Mentos and Diet Soda Fountain

This is an easy project. You'll get all wet, but as long as you use diet cola you won't get sticky. Just drop a roll of mentos all at once into a 2-liter bottle of diet cola.

Anne Helmenstine

This is a backyard activity, best accompanied by a garden hose. The Mentos fountain is more spectacular than a baking soda volcano. In fact, if you make the volcano and find the eruption to be disappointing, substitute these ingredients.

Explore Penny Chemistry

You can explore chemical reactions and clean pennies at the same time.

Anne Helmenstine

You can clean pennies, coat them with verdigris, and plate them with copper. This project demonstrates several chemical processes, yet the materials are easy to find and the science is safe enough for kids.

Make Homemade Invisible Ink

You can use invisible ink or disappearing ink to write secret messages
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Invisible inks either react with another chemical to become visible or else weaken the structure of the paper so the message appears if you hold it over a heat source. But we're not talking about fire here. The heat of a normal light bulb is all that's required to darken the lettering. This baking soda recipe is nice because if you don't want to use a light bulb to reveal the message, you can just swab the paper with grape juice instead.

Make Colored Fire at Home

The rainbow of colored fire was made using common household chemicals to color the flames

Anne Helmenstine

Fire is fun. Colored fire is even better. These additives are safe. They won't, in general, produce a smoke that is any better or worse for you than normal wood smoke. Depending on what you add, the ashes will have a different elemental composition from a normal wood fire, but if you're burning trash or printed material, you have a similar end result. In my opinion, this is suitable for a home fire or campfire, plus most chemicals are found around the house (even of non-chemists).

Make a Seven-Layer Density Column

You can make a colorful many-layered density column using common household liquids

Anne Helmenstine

Make a density column with many liquid layers. Heavier liquids sink to the bottom, while lighter (less dense) liquids float on top. This is an easy, fun, and colorful science project that illustrates the concepts of density and miscibility.

Make Homemade Ice Cream in a Plastic Bag

Add flavoring to make your science ice cream taste just the way you like
Nicholas Eveleigh / Getty Images

Science experiments can taste good! Learn about freezing point depression or not—the ice cream tastes good either way. This cooking chemistry project potentially uses no dishes, so cleanup can be very easy.

Make Hot Ice, or Sodium Acetate

You can supercool hot ice or sodium acetate so that it will remain a liquid below its melting point. You can trigger crystallization on command, forming sculptures as the liquid solidifies. The reaction is exothermic so heat is generated by the hot ice

Anne Helmenstine

Got vinegar and baking soda? If so, you can make "hot ice," or sodium acetate, at home and then cause it to instantly crystallize from a liquid into "ice." The reaction generates heat, so the ice is hot. It happens so quickly that you can form crystal towers as you pour the liquid into a dish.

Do the Burning Money Trick

This $20 is on fire, but it is not being consumed by the flames. Do you know how the trick is done?

Anne Helmenstine

The "burning money trick" is a magic trick using chemistry. You can set a bill on fire, yet it won't burn. Are you brave enough to try it? All you need is a real bill.

Create Coffee Filter Chromatography

You can use a coffee filter and a 1% salt solution to perform paper chromatography to separate pigments such as food colorings

Anne Helmenstine

Separation chemistry is a snap. A coffee filter works well, though if you don't drink coffee, you can substitute a paper towel. You can also devise a project comparing the separation you get using different brands of paper towels. Leaves from outdoors can provide pigments. Frozen spinach is another good choice.

Have a Baking Soda and Vinegar Foam Fight

Add a little bubble solution or detergent to the baking soda and vinegar reaction for foamy fun
Jose Luis Pelaez Inc / Getty Images

The foam fight is a natural extension of the baking soda volcano. It's a lot of fun and a little messy but easy enough to clean up as long as you don't add food coloring to the foam.