How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.