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Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea explores substances that cause a bubble to last longer.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.