| A | B |
|---|
| mattter | anything that takes up space and has mass |
| physical property | a characteristic than can be observed without changing a substance into a new substance |
| boiling point | the temperature at which a substance changes from liquid to gas |
| melting point | the temperature at which a substance changes from solid to liquid |
| mixture | 2 or more substances mixed but not chemically combined |
| pure substance | a substance made of only one kind of matter |
| element | a substance that can not be broken down, one the periodic table |
| compound | a substance made of two or more elements chemically combined |
| physical change | a change that does not change the identity of a substance |
| chemical change | a change that creates a new substance |
| solution | a mixture that is mixed so well that you can not see its parts |
| solid | state of matter with definite shape and volume |
| liquid | state of matter with a definite volume but no shape |
| gas | state of matter with no volume or shape |
| melting | changing from solid to liquid |
| freezing | changing from liquid to solid |
| evaporation | changing from liquid to gas |
| condensation | changing from gas to liquid |
| deposition | changing from gas to solid |
| sublimation | changing from solid to gas |
| thermal energy | the energy of particles |
| chemical property | a characteristic that can be seen when a substance changes into a new substance |
| heterogeneous | a mixture where you can see the separate parts |
| homogeneous | a mixture where you can't see the separate parts |
| solution | the best mixed mixture |
| viscosity | a liquid's resistance to flowing; thick liquids have a high viscosity |
| endothermic | a change in which energy is taken in |
| exothermic | a change in which energy is given off |
| law of conservation of mass/matter | the idea that matter is not created or destroyed in any physical or chemical change |
