| A | B |
|---|
| solid | a state of matter that has a definite volume and a definite shape |
| crystalline solid | a substance that is made up of crystals in which particles are arranged in a regular, repeating pattern |
| amorphous solid | a solid made up of particles that are not arranged in a regular pattern |
| liquid | has no shape, takes shape of its container. Because its particles are free to move, a liquid has no definite shape. It has a definite volume. |
| fluid | a substance that flows |
| viscosity | the resistance of liquid to flowing |
| gas | can change volume, particles can spread apart, filling all space available to them. A gas has neither a definite shape or volume. |
| temperature | measure of average energy of motion of the particles of a substance |
| pressure | the force of its outward push divided by the area of walls of the container |
| Boyle's law | pressure up volume down .......volume down, pressure up......inverse |
| Charle's law | temperature increase,volume increase.................volume increase, temperature increase......direct |
| graph | diagrams that tell how two variables are related |
| directly proportional | when a graph of two variables is a straight line passing through the (0.0) point |
| vary inversely | term used to describe the relationship between 2 variables whose graph forms a curve that slopes downward |
| thermal energy | total energy of a substance's particles due to their movement or vibration |
| chemical energy | form of energy that comes from chemical bonds |
| law of conservation of energy | the principle that the total amount of energy remains the same during physical or chemical change |
| melting | change in state from a solid to a liquid |
| freezing | change in state from a liquid to a solid |
| vaporization | change in state from a liquid to a gas |
| evaporation | process that occurs when vaporization takes place only on the surface of a liquid |
| boiling | process that occurs when caporization takes place inside the liquid as well as on the surface |
| condensation | change of state from gas to liquid |
| sublimination | change in state from a solid directly to a gas without passing through the liquid state |
| chemical reaction | process in which substances undergo chemical changes, forming new substances with different properties |
