| A | B |
|---|
| physical property | a characteristic of a substance that can be observed without changing the identity of the substance |
| density | a measure of the amount of mass in a given volume of a substance |
| physical change | a change in any physical property of a substance, not in the substance itselv |
| chemical property | describes how a substance can form a new substance |
| chemical change | the change of one substance into another substance |
| melting | the process by which a solid becomes a liquid |
| melting point | the temperature at which a substance becomes a liquid |
| freezing | the process by which a liquid becomes a solid |
| freezing point | the temperature at which a liquid becomes a solid |
| evaporation | a process by which a liquid becomes a gas |
| sublimation | the process by which a solid changes directly to a gas |
| boiling | a process by which a liquid becomes a gas that can be identified by the formation of bubbles |
| boiling point | the temperature at which a liquid boils |
| condensation | the process by which a gas changes its state to become a liquid |
