Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

Solve the mystery of the unpoppable balloon in this 7th grade science experiment that demonstrates the process of heat transfer.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

In this science fair project idea, kids make water dance on the surface of a hot pan with the Leidenfrost Effect.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

This science project idea determines whether cold water boils faster than warm water.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Learn about emulsification and bile's roles in digestion, and investigate how the digestive enzyme lipase breaks down lipids.

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

The project idea is to understand why chocolate turns white and to determine the fastest way that this process can occur.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

This science fair project idea determines if pancreatic lipase can break down lipids on its own or does it require the assistance of digestive bile salt.

Determine whether the application of Febreeze will lower the bacterial count.

Science fair project that uses distillation to convert salt water into fresh water.

Use an Elihu Thomson apparatus, also known as a ring launcher, to learn about electromagnetism concepts and the properties of various metals.

This science fair project idea deals with the qualities of shade on a sunny day.

This science fair project idea determines if a particular chemical has an effect (increase or decrease) on the heart rate of Daphnia.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.