In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

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.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

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

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science project teaches students to classify different shapes of leaves.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science experiment tests if dog saliva can really help heal wounds.

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

This science fair project idea explores how length affects the weight a bridge can hold.

This science project allows students to study the psychology of happiness.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Find out which type of sponge holds the most water.

This science research project challenges students to think of more effective lobster farming methods.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!