| A | B |
|---|
| matter | anything that has mass and takes up space |
| mass | measure of how much matter is in an object |
| volume | the amount of space an object takes up |
| energy | the ability to cause change |
| solid | matter that has a definite shape and volume |
| liquid | matter that has a definite volume but no definite shape |
| gas | matter that does not havea definite shape or volume |
| density | the amount of mass in a certain volume of matter |
| physical change | a change in the size, shape, or state of a material |
| relative density | a comparison of density between two onjects based on whether the objects float or sink |
| actual denisty | mass divided by volume |
| chemical change | any change in which one or more new substances are formed |
| melting | the change of state from a solid to a liquid |
| evaporation | the change of state from a liquid to a gas |
| condensation | the change of state from a gas to a liquid |
| molecule | particle made up of two or more atoms |
| signs of a chemical change | burning, bubbling, new gas formed, new substance formed |
| signs of a physical change | change in state of matter, size, or shape |
