In normal everyday life we come across matter in three states, solid, liquid and gas. They have a fixed shape and cannot flow The particles cannot move from place to place They cannot be ...

Although the three states of matter are solid, liquid, and gas, not all substances seem to fit perfectly into one of these groups. Take a look at the substance below and see if you can decide whether ...

After viewing a model of salt, students help develop models for the processes of salt dissolving, water evaporating to form a gas, and salt re-forming as a crystal. The focus is that matter, whether ...

You probably learned in school that there are three states of matter: solid, liquid and gas. Think ice cube, a puddle of water and fog. Maybe you also learned about a fourth state, known as plasma.

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Kinetic theory explains that matter is made up of tiny particles which constantly move. Forces hold the particles together which vary in size for solids, liquids and gases. This is called kinetic ...