What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

introduction to organic chemistry. study what happens when polymer molecules are mixed with borax solution.

Get a cool middle school chemistry project idea on how to determine whether a physical or a chemical change has taken place.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Learn the chemistry and physics of the brain, how our nervous system work. Demonstrate that the brain is an electrical and chemical machine.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

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

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

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.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

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

Design and build an invention inspired by Rube Goldberg's designs. Build your invention. Test the machine, write a detailed report.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Test the combustion of different types of woods.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

This science fair experiment organizes made-up elements to simulate Mendeleev when he made the periodic table of elements.

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

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

In this science fair project, students will learn how to calculate the formula for the thermal decomposition of potassium chlorate.

In this experiment a spectrometer is used to analyze the light emitted by burning ion solutions.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.