| A | B |
|---|
| matter | anything that has volume and mass |
| volume | amount of space something occupies |
| meniscus | curve at a liquid's surface |
| mass | amount of matter that something is made of |
| weight | measure of gravitational force exerted on an object |
| physical property | property of matter that can be observed or measured without changing the identity of the matter |
| chemical property | property of matter that describes a substance based on its ability to change into a new substance |
| density | amount of matter in a given space |
| physical change | affects one or more physical properties of a substance: most can be undone |
| chemical change | occurs when one or more substances are changed into entirely new substances with different properties |
| states of matter | physical forms in which a substance can exist |
| solid | matter has a definite shape and volume |
| liquid | takes the shape of its container but has definite volume |
| gas | changes in both shape and volume |
| plasma | does not have a definite shape or volume and whose particles have broken apart |
| change of state | conversion of a substance from one physical form to another |
| melting | change from solid to liquid |
| boiling | vaporization that occurs throughout a liquid |
| evaporation | vaporization that occurs at the surface of a liquid |
| condensation | change from gas to liquid |
| sublimation | change from a solid directly to a gas |
| element | substance that cannot be broken down into simpler substances |
| compound | substance made up of two or more elements |
| atom | smallest unit of an element |
| interact | to act upon one another |
| process | set of steps, events or changes |
