| A | B |
| condensation | change of state from a gas to a liquid |
| boiling | the conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure |
| evaporation | change of a substance from a liquid to a gas slowly |
| sublimation | the process in which a solid changes directly into a gas or a gas into a solid |
| melting | change of state in which a solid becomes a liquid |
| freezing | change of state from a liquid to a solid |
| change of state | the change of a substance from 1 physical state to another |
| temperature | measure of how fast the particles in an object are moving; measure of how hot or cold something is |
| pressure | the amount of force exerted per unit area of a surface |
| volume | the amount of space an object takes up |
| viscosity | the resistance of a gas or liquid to flow |
| surface tension | force that acts on the particles at the surface to form spherical drops |
| liquid | has a definite volume but no definite shape |
| gas | has no definite shape and no definite volume |
| solid | has a definite shape and a definite volume |
| chemical change | change where 1 or more substances change into a new substance |
| chemical properties | describe matter based on its ability to react with other substances |
| physical change | a change that affects 1 or more physical properties of a substance |
| density | Density = mass / volume |
| physical property | can be observe or measured without changing the matter |
| mass | amount of matter in an object |
| inertia | tendency of an object to resist change |
| malleability | ability to be rolled or made into thin sheets |
| density | physical property |
| ductility | can be pulled into a wire shape |
| thermal conductivity | rate at which a substance transfers heat |
| solubility | ability of a substance to dissolve in another substance |
| composition | type of matter that makes up an object and the way it is arranged in the object |
| weight | measure of the gravitational force on an object |
| meniscus | the cure at a liquids surface by which one measures the volume of the liquid |