| 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 the particles are arranged in a regular repeating pattern |
| melting point | the temperature at which a substance changes from a solid to a liquid |
| amorphous solid | a solid made up of particles that are not arranged in a regular pattern |
| liquid | a state of matter that has a definite volume but no definite shape |
| viscosity | the resistance of a liquid to flowing |
| gas | a state of matter with no definite shape or volume |
| temperature | the measure of the average kinetic energy of the particles in a substance |
| pressure | the force exerted on a surface divided by the total area over which the force is exerted also the force of a gas's outward push divided by the area of the walls of the container |
| Boyle's law | the relationship between the pressure and volume of a gas at constant temperature when volume increases pressure decreases |
| Charles's law | the relationship between the temperature and volume of a gas at constant pressure when temperature increases volume increases |
| graph | a diagram that shows how two variables are related |
| directly proportional | a term used to describe the relationship between two variables whose graph is a straight line passing through the point (0 0) |
| vary inversely | a term used to describe the relationship between two variables whose graph forms a curve that slopes downward from left to right |
| thermal energy | the total energy of a substance's or material's particles due to their movement or vibration |
| melting | the change from the solid to the liquid state of matter |
| freezing | he change in state from a liquid to a solid |
| vaporization | the change from the liquid to the gaseous state of matter |
| evaporation | the process that occurs when vaporization takes place only on the surface of a liquid |
| boiling | vaporization that occurs on and below the surface of a liquid |
| boiling point | the temperature at which a substance changes from a liquid to a gas |
| condensation | the change from the gaseous to the liquid state of matter |
| sublimation | the change in state from a solid directly to a gas without passing through the liquid state |
| states | the three forms solid liquid and gas in which matter exists |
| change of state | the physical change of matter from one state to another |
| freezing point | the temperature at which a substance changes from a liquid to a solid |
| thermal expansion | the expansion of matter when it is heated |
