| A | B |
|---|
| matter | anything that has mass and takes up space |
| mass | a measure of the amount of matter in a sample |
| gram | a unit of mass |
| kilogram | a unit of mass equal to 1000 grams |
| triple beam balance | a tool used to measure mass |
| volume | the amount of space that a sample of mass takes up |
| liter | a unit of volume |
| graduated cylinder | a tool used to measure the volume of a liquid |
| molecule | the smallest particle of a substance that has the properties of that substance |
| substance | a pure form of matter that contains only one type of molecule |
| phase | the physical form of matter, such as gas, liquid, or solid; also called the state |
| solid | the phase of matter that has a definite shape and volume |
| liquid | the phase of matter that has no definite shape but has a definite volume |
| gas | the phase of matter that has no definite shape and no definite volume |
| fluid | a material that flows; a liquid or a gas |
| boiling | a rapid change from liquid to gas that occurs at a particular temperature |
| melting | changing from solid to liquid |
| freezing | changing from liquid to solid |
| evaporating | a phase change from liquid to gas that occurs at the surface of a liquid at any temperature |
| condensing | changing form a gas to a liquid |
| subliming | changing from a solid to gas |
| depositing | changing from gas to solid |
