Observe the differences between solids, liquids and gases.

Investigate the properties of a strange substance which acts like a liquid and a solid. This simple experiment can be done with corn starch and water.

This set of interactive flashcards focuses on 20 terms related to Solids, Liquids, and Gases (the three states of matter).

This interactive assessment features 7 matching, 7 multiple-choice, and 6 true/false questions over 20 terms related to Solids, Liquids, and Gases (the three states of matter).

Matter of any type can be subdivided into particles that are too small to see, but even then the matter still exists and can be detected by other means. Students will participate in hands-on activities to prove that matter is made up of...

What causes frost to form on the outside of a cold container? In this activity, students will see that the liquid water can change state again and freeze to become ice.

A tutorial reviewing the states of matter and the effects of heating and cooling matter in the different states. (Note: some of the links may not load in the archived version of the site.)

Students investigate how low temperature causes water vapor to condense into a liquid and then freeze to form a solid.

Kid's learn about the science of melting and boiling. How matter changes state from solids to liquids to gases.

Kid's learn about the science of states of matter. Solids, liquids, gases, and even plasma.

Learn about sound waves, which move vibrations from one place to another through liquids, gases and solids, with this interactive lesson.

You know that water can exist in three separate phases: solid (ice), liquid (water), and vapor (steam). To change from one phase to another, you simply add (or remove) heat. When water boils, what happens to molecules (for example sugar...

Through an instructional video, games, and activities, students explore three types of change matter makes: physical change, in which only the shape of the matter changes; physical phase change in which matter changes to a different form...

This resource provides a brief overview of friction. Its' affects on solids, liquids and gases is described with diagrams. An explanation of how friction is measured is included in the discussion. An online quiz can be used to check your...

Ever go to pour ketchup on your fries and nothing comes out? Or the opposite happens, and your plate is suddenly swimming in a sea of red? George Zaidan describes the physics behind this frustrating phenomenon, explaining how ketchup and...

"A centrifuge separates a heterogeneous mixture of solid and liquid by spinning it." Use this site to find out how to correctly use a centrifuge in this informative site.

A simple lab experiment for students to find the density of two solids and a liquid (does not use water displacement). Note that number 1d should not state "weighs" since mass is being found.

A comprehensive lesson plan site that contains a number of activities to aid in teaching about the states and properties of matter and the difference between a physical and chemical change.

Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the...

In this lab experiment, students will use 4 solids and 6 liquids to create colorful, layered rows demonstrating that less dense materials will float on top of the more dense materials.