| Term | Definition |
| Boyle's Law | V1 X P1= V2 X P2 |
| kPa | kilopascals |
| 1000 Pa | 1 kPa |
| Pa | pascal |
| Charles's Law | V1/T1=V2/T2 |
| K= | (C+273) |
| atm | atmospheric pressure |
| When the temperature of a gas increases, | its volume increases |
| When the temperature of a gas decreases, | it volume decreases |
| When the temperature of a gas increases, | its pressure increases |
| When the temperature of a gas decreases, | its pressure decreases |
| absolute zero | the lowest temperature that is theoretically possible and the motion of the particles in very little |
| solid | definite shape and definite volume |
| liquid | definite volume and its shape is determined by its container |
| gas | no definite shape or volume |
| viscosity | the resistance of a liquid to flowing |
| fluid | a substance that flows |
| crystalline solid | solids that are made of crystals |
| examples of crystalline solids | salt, sugar, and sand |
| amorphous solid | the particles are not arranged in a regular pattern |
| example of amorphous solids | plastic and rubber |
| pressure | the force of a gas's outward push divided by the area of the walls of the container |
| vacuum | a space entirely devoid of matter |
| temperature | the measure of the average energy of motion the particles of a substance |
| volume | amount of space that matter takes up |
| mass | amount of matter in an object |
| area | the measure of squared distance |
| compress | squeeze or press together |
| phase change | the particles of a substance gain or lose energy |
| physical change | a change where no new substance is created |
| chemical change | a change where a new substance is created |
| Pressure= | Force/Area |
| force is measured in | Newtons |
| how solid particles move | vibrating slowly |
| how liquid particles move | free to move but remain in close contact |
| how gas particles move | freely |
| alka-seltzer creates | carbon dioxide |
| liquid, solid, gas and plasma | four states of matter |
| Gases easily | expand and compress |
| when gas particles leak out of a soccer ball | they spread out to the next container |
| REAl glass stands for | Rare Earth Aluminum oxide |
| law of conservation of energy | in every physical and chemical change the total amount of energy stays the same |
| melting | the change from a solid to a liquid |
| freezing | the change of a liquid to a solid |
| vaporization | the change from liquid water to water vapor |
| condensation | occurs when a gas loses enough thermal energy to become a liquid |
| sublimation | when the surface particles of a solid gain enough energy to become a gas |
| chemical reaction | another name for chemical change |