In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

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.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

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

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.