| A | B |
|---|
| formula | the short way of writing a compound |
| physical change | a change in matter that does not produce any new products |
| dissolve | to make solid matter disappear in a liquid |
| chemical change | a change in matter that produces new substances |
| weight | the measure of the force of gravity on an object |
| mass | the measure of how much matter an object contains |
| volume | the amount of space matter occupies |
| valence electron | an electron in the outermost energy level of an atom |
