Did you know the ancient Greeks first identified the three states of matter? Read about how the molecules differ in solids, liquids, gases, and plasma. View photographs and watch how the molecules move in each state. If you're really...

[Free Registration/Login Required] States of Matter: Venn Diagram for Solids, Liquids, and Gases.

[Free Registration/Login may be required to access all resource tools.] Definition of state of matter and the three common states of matter and their differences.

Use this resource to learn about the three different phases of water; solid, liquid, and gas. What happens to water as it changes into a solid or gas? Includes short and easy to do activity.

In Beautiful Chemistry, we talk about crystals, quasicrystals and glasses, which are all solids. Here, we see the molecular structure of gases and liquids.

Learn about the three phases of matter, and how the addition and removal of thermal energy (also known as heat) affects them.

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

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

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

[Free Registration/Login Required] This flipcharts explains the basics of matter. Opportunities for student involvement include measuring solids, identifying matter, and a sorting activity.

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.

Students use the EasyTemp temperature probe to determine temperature changes as different solid substances dissolve in water. They then develop and test a plan for making the best cold pack using three grams of one of the substances....

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

Help the Phantom choose a material and observe the changes at different temperatures in the molecule chamber. What happens to the elements or molecules as the temperature changes?

A very descriptive site that allows students to understand the different states of matter at the atomic level. Also discusses the process of phase changes and displays phase change graphs. Thermochemistry is also touched upon for high...

This Homewood City Schools site has an outline form and contains lots of information about the classification and composition of matter. Some of the topics covered are matter and temperature, changes in state, composition of matter, and...

Learners characterize materials by their state of matter and then combined materials to create a piece of colorful, tie dye-esque paper.

Students will use their prior knowledge about changes of matter including physical and chemical changes to examine and categorize various types of plastics (polymers). They will identify how their chemical properties allow them to have...

A very complete list of terms that are important to the study of gases. This resource is a web archive.

Explore the concept of matter in this Spanish-language encyclopedia entry. This site features the properties of matter, the Law of Conservation of Matter, and other important features of matter.

Four activities for reviewing vocabulary and definitions related to changes in states of matter.

Students observe a molecular dance of bursting colors through exploring states of matter and learning that materials can be characterize by how they respond to water.

Learners will witness a fascinating chemical reaction and learn how to identify when a reaction has occurred by combining simple ingredients.

Learn about topics related to the material world. Each topic includes facts, a glossary, an interactive quiz, printable worksheets, an image bank, and web links.