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

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

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.

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.

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