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

Test out various brands of permanent markers to see which one is least water soluble.

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

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

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.

This surprisingly good glue recipe comes from common kitchen items.

This experiment explores the most common colors that appear among a sample of crossbred guppies.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

This experiment uses personality assessments to evaluate if certain personality traits are more common in people with unusual first names.

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

Research responsibilities of physicists, and common thinking patterns. Devise a questionnaire that measures career aptitude in physics.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Science fair project that compares tap water and bottled water for the presence of common impurities.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.