Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This surprisingly good glue recipe comes from common kitchen items.

Kids conduct a simple science experiment to see if seeds can grow without soil in this simple kindergarten science activity.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

Check out this cool science fair project on identifying rocks and minerals for kids.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

In this science project, baking powder and vinegar are used to simulate the action of a fire extinguisher.

Check out this cool science fair project idea to learn why it is important for kids to eat healthy foods like fresh fruits and vegetables.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Study how liquids separate into layers by creating a liquid gradient, different density liquids separate into layers in a graduated cylinder.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Science fair project that tests whether cats have a preference for organic food.

The project investigates which soft drink is worse for your teeth by observing the affect of soft drink on limestone.

This project determines how much the rebound rates of tennis balls change after ten games.

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

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

Determine how good we are at direct and indirect observation.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

Have you or your child ever heard that nursery rhyme and wondered just what curds and whey are anyway? Do this simple experiment together to find out!