| A | B |
|---|
| amorphous solid | A substance that may behave as both a solid and liquid |
| atmospheric pressure | weight of the air above you |
| barometer | instrument that measures atmospheric pressure |
| boiling | when atmospheric pressure and vapor pressure of a liquid are equal, this happens |
| melting | solid--> liquid |
| sublimation | solid-->vapor |
| freezing | liquid-->solid |
| condensation | gas-->liquid |
| vaporization | liquid-->gas |
| evaporation | when molecules escape the surface of a liquid |
| kinetic molecular theory | explains the behavior of solids, liquids, and gases |
| melting point | the same temperature as the freezing point |
| normal boiling point | temperature at which a liquid boils at 1 atm |
| phase change | when a substance changes states |
| plasma | a fourth phase of matter rarely seen on earth |
| vapor pressure | produced by molecules evaporating from the surface of a liquid |
| "Aurora borealis" | actually produced by a low density plasma in the upper atmosphere |
| crystal | when atoms,ions, or molecules are arranged in an orderly,repeating,three-dimensional pattern |
| viscosity | resistance to flow in a liquid |
| diamond | a special solid called a "covalently bonded" solid |
| triple point | for a substance, a temperature and pressure at which a solid, liquid, and gas can coexist |
