1. When a solid changes to a liquid it is called what?
   
2. True or false? Liquids are easy to compress.
   
3. True or false? The particles of a gas are packed tightly together.
   
4. When solids reach their melting points they become what?
   
5. True or false? Plasma is a state of matter.
   
6. When a gas reaches its condensation point it becomes a what?
   
7. True or false? Solids do not take the shape of the container they are in.
   
8. What is it called when a solid changes directly into a gas?
   
9. True or false? Gases are hard to compress.