Students will look at what happens to different types of matter when they have a change of state.

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.

This site helps students construct a model of the arrangement of water molecules when present as solid, liquid or gas. Includes background information, lesson plans, links to standards and assessment ideas.

Resource provides information about the difference between physical and chemical changes. Includes a definition and examples of each.

[Free Registration/Login may be required to access all resource tools.] Definition of a change of state and the physical processes that cause it.

A discussion of the variety of forces which hold molecules together. The relative strengths of these forces for the various states of matter is discussed. The effect of such forces on the boiling points and other phase change...

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.

At this resource discover the difference between solids, liquids, and gases. Practice what you just learned with included review questions.

In this chemistry lab, students will investigate, observe, and describe a variety of chemical and physical changes in matter. They will understand that this is part of everyday life.

Explore the differences between chemical and physical changes, including some examples at the atomic level.

Identify chemical and physical changes and the differences between the two.

This lab serves as a short introduction to both changes in state and air pressure/the gas laws. The students will heat a small amount of water in an aluminum can. They will then invert it in a bucket of cold water and crush the can using...

Our understanding about the air we breathe has changed dramatically through time. This illustrated timeline from the NOVA Web site tracks the changing thought on air and the creation of the Periodic Table of the Elements.

Discusses the changes of state that can occur for the three different types of matter (solids, liquids, and gases) and different types of heat energy that have been defined by scientists.

Observe the changes in the states of matter and volume when a balloon-covered flask with water in it is heated.

Fourth graders will explore states of matter and the water cycle by bringing water to life with their bodies. By enacting the changes that water molecules experience, 4th graders will learn scientific information kinesthetically.

Allow your students to explore states of matter as they learn what causes frost to form on the outside of a cold container. Students will observe how liquid water can change to ice or water vapor in this lab. Lesson includes background...

In this lesson plan site, students will define matter and compare properties of solids, liquids and gases.

Learn how mass is conserved in physical and chemical changes.

Take on this self-guided advanced level e-text, and learn about the chemical and physical structure of liquids and solids.

Given descriptions, scenarios, or illustrations, students will distinguish between the compressibility, structure, shape, and volume of solids, liquids, and gases.

[Free Registration/Login may be required to access all resource tools.] Definition of a change of state and the physical processes that cause it.

A collection of science lessons where young scholars explore the characteristics of different materials and everyday objects and create their own objects and art. They study the properties of the materials that make them strong,...