click below
click below
Normal Size Small Size show me how
Unit 1.2
Science
| Term | Definition |
|---|---|
| atom | are the smallest unit of elements that maintains the proporities of that element |
| element | a substance that can not be seporated or broken down into simalar substances by chemical means |
| compound | a substance made up of atoms of 2 or more different elements joined by chemical bond |
| mixture | a combination of two or more [substances that are not chemically combined |
| pure substances | a sample of matter either a single element ora single compound that has |
| heterogeneous | denoting a process involving substances in different phases (solid, liquid, or gaseous). |
| homogeneous | something that has a uniform structure |
| solid | a substance or object that is solid rather than liquid or fluid. |
| liquid | having a consistency like that of water or oil, i.e., flowing freely but of constant volume. |
| gas | an airlike fluid substance which expands freely to fill any space available, irrespective of its quantity. |
| freezing | under 32 decrese to freezing strong winds and freezing temperatures" |
| melting | make or become liquefied by heat. |
| evaporation | Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gas |
| boiling | change from liquid to gas |
| condensation | water that collects as droplets on a cold surface when humid air is in contact with it. |
| sublimation | Sublimation is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase. |
| deposition | the change of gas direcly to a soild |