| 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 |
| Charles's Law | The relationship between the temperature and volume of a gas at constant pressure; when temperature increases, volume increases |
| Boyle's Law | The relationship between the pressure and volume of a gas at constant temperature; when volume increases, pressure decreases |
| 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) |
| 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 | The 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 one 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 |
| Vary inversely | A term used to describe the relationship between two variables whose graph forms a curve that slopes downward from left to right |
