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

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

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

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.

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

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.

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

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

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

Is garlic antibacterial? Antimicrobial? Kids find out by using common kitchen equipment and ingredients in this cool and easy microbiology science fair project.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

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.

This experiment uses personality assessments to evaluate the prevalence of specific character traits in left-handed and right-handed people

Examine spreadsheet functions and design a new way to utilize spreadsheets. Analyze a spreadsheet program to familiarize yourself with its capabilities.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

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

Research historic methods of food preservation. Analyze alternative recipes and techniques of food preservation. Document success with photographs.

This project examines which style of central-air system filter traps the most particles from the air.

The objective of this experiment is to evaluate which types of people are most impacted by the McCollough effect.

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

Check out this cool science fair project on identifying rocks and minerals for kids.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this experiment you will replicate the mummification process by making a hot dog mummy.

This project examines whether and what associations exist between numbers and letters and colors.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.