| Term | Definition |
|---|
| Solid | has a definite shape and definite volume |
| Crystalline solids | solid that are made up of crystals, form a regular repeating pattern |
| Amorphous solid | the particles that are not arranged in a regular pattern |
| Liquid | has a definite volume but no shape of its own |
| Surface tension | is the results of an inward pull among the molecules of a liquid that brings the molecules of the surface closer together |
| Viscosity | a liquid's resistance to flowing |
| Gas | can change volume very easily, they either spread out or squeeze together |
| Melting | the change is state from a solid to a liquid |
| Melting point | when something melts at a certain temp |
| Freezing | the change of state from a liquid to a solid |
| Vaporization | the change from a liquid to a gas |
| Evaporation | vaporization that takes place only on the surface of a liquid |
| Boiling | occurs when a liquid changes to a gas below its surfaces and well as at the surface |
| Boiling point | the temp at which a liquid boils |
| Condensation | change from a gas to a liquid |
| Sublimation | occurs when the surface particles of a solid gain enough energy that they form a gas |
| Volume | is the amount of space matter fills |
| Temperature | is a measure of the average energy of random motion of the particles of a substance |
| Pressure | the gas is the force of its outward push divided by the area of the walls of the container |
| Boyle's Law | when the pressure increases the volume decreases and when the pressure decreases the volume increases |
| Charles's law | when the temp. is increased at a constant pressure the volume increases and when the temp. is decreased at a constant pressure the volume is decreased |
| Graph | is a diagram that tells how two variables, or factors that change, are related |
| X-axis | shows the manipulated variable, horizontal, side to side |
| Y-axis | shows the responding variable, vertical, up and down |
| Origin | the point on a line graph |
| Directly proportional | used to describe the relationship between 2 variables whose graph is a straight line passing through the point |
| Vary inversely | a graph that forms a curve and slopes downward |
| Latent Heat of Fusion | is the energy that is used to melt a solid to a liquid |
| Specific heat | is the energy needed to change the temperature |
| Latent Heat of Vaporization | is the energy used to change state from a liquid to a gas and from a gas to a liquid |
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