1. Matter Tommy Jenkins Hello. Pay attention. It does MATTER!

2. Gases are formed when a liquid evaporates. The particles in a gas have enough energy to spread very far apart. When this happens, it is called diffusion.

3. Gas is the most common form of matter. Gas takes up any space that is not filled with a solid or a liquid. Solids are formed when a liquid is cooled. The liquid hardens and forms a solid.

4. Solids are the least common form of matter. Are you paying attention?!

5. Solids are changed by heat. When a solid is heated, the particles gain energy, allowing them to spread out. When a solid changes into a gas without turning into a liquid, it is called sublimation. Chemical reactions happen when the atoms in one substance break away from each other and mix with the atoms of another substance. When the atoms mix, they link together and form a product. During a chemical reaction energy is not absorbed or given off. Chemical reactions need a certain amount of energy to set them off.

6. THE END I hope you enjoyed the show!! Goodbye! Me too!!