Learn about the increase or decrease of size of an object due to thermal expansion in this college textbook section. Understand how to calculate linear and volume expansion of an object as well as thermal stress. Section also includes...

By the end of this section, you will be able to state the common phases of matter; explain the physical characteristics of solids, liquids, and gases; and describe the arrangement of atoms in solids, liquids, and gases.

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.

This lesson introduces students to the important concept of density. The focus is on the more easily understood densities of solids, but students can also explore the densities of liquids and gases. Students devise methods to determine...

Features a collection of hands-on activities, investigations, and explorations designed to engage students in learning about ice, both in the solar system and on planet Earth.

Many substances are actually mixtures of different things. For example, milk, which looks like it is one substance, is actually a mixture of many different solids and liquids. Chromatography is a technique that is used to separate...

Water can exist in three different phases. This still collage produced for Teachers' Domain features examples of water in liquid, solid, and gas states.

This lesson focuses on the states of matter: solids, liquids, and gases. It also discusses the Kinetic Theory of Matter, Thermodynamics, Triple point, Phase Change Graphs and the Heating Curve of Water. It provideds adrawing of a heating...

A Quantitative Transfer simply means that all the material to be transfered from one place to another must make the trip, down to the last particle. Use this site to find out how to correctly transfer a solid and a liquid.

Learn about how greater temperatures increase the solubility of solids in liquids due to a greater velocity of the particles. A chart helps explain the solubility rate of glucose at different temperatures. Also, find links to textbook...

As learners begin their study of states of matter, this hands-on activity demonstrates how the interaction of a solid and a liquid can reverse the initial state of each material.This lesson plan was created as a result of the Girls...

As part of a larger site called "Getting started in Chemistry," this site examines various topics related to the densities of substances and materials. Included in the study are properties of solids, liquids and gases, and how density is...

Tells the story of how Archimedes discovered the Archimedes Principle and his water displacement method for determining the volume and density of an object. Provides an explanation and several examples of how it is done.

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...

An eBook containing information regarding states of matter as it applies to celestial bodies and a universe.

Join a group of middle-school students on a visit to a laboratory at the Massachusetts Institute of Technology, where they experiment with "mystery mud" and learn about the relationships between magnetism, particle motion, and changes in...

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

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

The concepts of melting point and freezing point are explained on this site.

In this activity, students construct models of molecules using marshmallows and gum drops.

This activity explores the property of density in a variety of liquids and solids.

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

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...

Vacuum filtration is a technique for separating a solid product from a solvent or liquid reaction mixture. This comprehensive site addresses setting up and performing vacuum filtration.