A brief site which defines solids, liquids and gases along with a drawing of each.

Examine the link between molecular motion and energy. Observe the movement of a molecule at room temperature. Learn about the different types of molecular motion.

A great resource to discover fun new activities to use in your classroom. Activities are age-appropriate, and span several science topics.

[Free Registration/Login Required] Review the three forms of matter with this flipchart. This could also be used for a pre-assessment before a unit on matter.

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...

Science experiment that demonstrates the four states or phases of matter: solid, liquid, gas, and plasma. Includes full list of materials, procedures, and scientific explanation of how you change water from a liquid state to a gaseous...

[Free Registration/Login Required] An informational text about how cooking causes changes in matter. A question sheet is available to help students build skills in reading comprehension.

For this activity, young scholars are given a 'mysterious substance' made of cornstarch and water, and they must test it using common materials such as vinegar or water, to see if they can determine whether it is a solid, liquid, or gas....