| A | B |
| gas | matter that has no definite volume or shape. |
| states of matter | the forms of matter solid, liquid, and gas. |
| energy | the ablity to cause change. |
| compound | matter made up of two or more elements that are joined together. |
| atom | the smallest part of an element that still has the properties of that element |
| evaporation | the change of state from a liquid to a gas. |
| substances | elements and compounds make up a large class of matter |
| solid | matter that has a definite volume and deifinite shape. |
| freezing | the change of state from a liquid to a solid |
| melting | the change of state from a solid to a liquid. |
| chemical formula | a group of symbols that show the kind and number of each element in a single unit of a compound. |
| element | any material made up of a single kind of matter. |
| boiling | the rapid change of state from a liquid to a gas. |
| liquid | matter that has a definite volume but no definite shape. |
| condensation | the change of state from a gas to a liquid. |
| chemical symbols | one or two letters taht stand for the name of an element. |