This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

Do you think heat can affect a plant's growth rate?

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.

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

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

This science fair project idea investigates food preference of birds.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

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

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 experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Can cells be frozen? This science fair project provides information to answer this question.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

This project examines the concentration of dissolved oxygen in water, with and without oil.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.