| A | B |
|---|
| compound | a substance formed by a chemical reaction from two individual elements |
| reactant | original substance at the beginning of a reaction, always on left |
| product | substance produced by a chemical reaction |
| evaporation | process of liquid changing to gas |
| sublimation | solid changing directly to a gas |
| condensation | a gas changes to a liquid |
| chemical change | a reaction (or property) that produces a new substance |
| freezing point | temperature at which a substance freezes and changes states |
| melting point | a point at which a substance melts |
| boiling point | the point at which a substance changes from a liquid to a gas |
| precipitate | a solid formed by a chemical reaction in a solution |
| chemical reaction | occrurs when atoms link together in a new way to fomr new substnces |
| physical change | change of matter in size, shape, or state that does not change the type of matter |
| solid | fixed shape and fixed volume |
| liquid | fixed volume and no fixed shape |
| gas | no fixed shape or volume, expands to fill container |
| molecule | when two atoms of elements join together |
| chemical formula | used to show reactants and products in a reaction and their proportions |
