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

Observe the differences between solids, liquids and gases.

Description of the factors influencing gas solubility. This site also provides other chemistry related questions. Topics include dissolving solids into liquids, concentration, and stoichiometry.

Students observe and describe, on the molecular level, how heating and cooling affect the motion of molecules in a solid.

Climates vary and understanding that water on earth reacts to the climate is a way to understand why water can be found as both liquid and solid on earth. Included in this lesson is a video of the activity in action, and an image of a...

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...

Learn what a Buchner funnel is, how it works to filter solids from liquids, and some of its applications.

Students are given a variety of materials and asked to identify if each material as a solid, liquid or gas. They use their five senses - sight, sound, smell, texture and taste - to identify the other characteristics of each item.

This lesson focuses on solids, liquids, and gases. It has several review activities and an exciting lab experiment involving ice cream to complete the lesson.

There are billions of tiny bits of solid and liquid floating in the atmosphere. Learn about those tiny floating particles called aerosols or particulates.

Students explore how sound waves move through liquids, solids and gases in a series of simple sound energy experiments. Understanding the properties of sound and how sound waves travel helps engineers determine the best room shape and...

Students are introduced to sound energy concepts and how engineers use sound energy. Through hands-on activities and demonstrations, students examine how we know sound exists by listening to and seeing sound waves. They learn to describe...

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

In this instructional activity learners are required to observe a simple model of the water cycle constructed of sand and ice in a plastic shoe box.

What is a colloid? If you have made Oobleck out of corn starch and water, then you know that a colloid is a mixture that acts like a solid and a liquid at the same time. This activity helps you determine the critical factors that...

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.

Discover the concept that energy transfer and molecular motion cause the change in state from a solid to a liquid. Also compare state changes of water to the state changes of other substances.

Learn about matter, its three states, changes of state, how matter behaves, and physical and chemical changes in matter.

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...

This tutorial helps students understand the Kinetic Theory, which explains the effects of temperature and pressure on matter as it goes through phase changes.

A collection of lesson plans for helping young scholars understand atomic composition. Site uses work samples, phenomena, assessment templates, and videos to plan lessons to describe the atomic composition of simple molecules.

This interactive allows you to explore the effect that temperature and pressure have on the changes in the states of matter. You can test these variables on carbon dioxide, hydrogen and water.

Explains different sections of the periodic table, and how they are used.

Provides interesting information about the three basic states of matter: solid, liquid, and gas.