1. Plasma

2. Solid  A solid is matter that has a definite shape and volume.  Particles in a solid are packed closely together.  Particles vibrate in place, but do not have enough energy to move out of their fixed position. Liquid  A liquid is matter that has a definite volume but not a definite shape.  If you pour a liquid from one container to another, the liquid will form to the container, but the amount stays the same.  Particles in a liquid move more freely than a solid but it doesn’t have enough energy to move far.

3. Gas  Gas is matter that has no definite shape or volume.  Particles in a gas are far apart and move at high speeds in all directions. Plasma  Plasma occurs at extremely high temperatures.  Found in stars, lightning, and neon lights.

4. Atoms and molecules of substances move because they have energy. As the amount of energy increases, so does the movement of molecules! If a substance loses energy, the molecules move more slowly. Why does matter change state?

5. Changes between a solid and a liquid state 1.Melting occurs when a solid absorbs thermal energy and its temperature rises. 2.Freezing occurs as the liquid cools, it loses thermal energy and the particles slow down and come closer together. Changes between a liquid and gas state Vaporization and Condensation Changes between a solid and gas state This is called sublimation- skips the liquid state