Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

How powerful is the reaction between baking soda and vinegar? Find out here!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

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.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.