Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

This science fair project idea experiments with spinning color wheels and optical illusions.

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.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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

This science fair project idea explores whether talking to a plant will help it grow.