| Term | Definition |
|---|
| Solid | of definite shape and volume, has a definite shape and volume |
| Crystalline Solid | Solids that are made up of crystals |
| Amorphous Solid | The particles are not arrange in a regular pattern. |
| Liquid | matter that has a definite volume but no definite shape |
| Fluid | A substance that flows |
| Surface Tension | the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together |
| Viscosity | a liquid's resistance to flow |
| Gas | matter that does not have a definite shape or volume |
| Melting | the change of state from a solid to a liquid |
| Melting Point | The temperature at which a given substance will change from a solid to a liquid. |
| Freezing | the change from the liquid to the solid |
| Vaporization | the change from a liquid to a gas |
| Evaporation | vaporization that occurs at the surface of a liquid |
| Boiling | vaporization that takes place below the surface of a liquid |
| Boiling Point | the temperature at which liquid boils |
| Condensation | the change of state from a gas to a liquid. |
| Sublimation | the process by which a solid changes directly into a gas |
| Pressure | the force of its 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 temperture; when volume increase, pressure decreases. |
| Charles's Law | The temperature of a gas is decreased at constant pressure, its volume decreases |
| Graph | A diagram that shows how two variables, or factors that change, are related. |
| Origin | the point labeled (0,0) on a number line |
| Directly Proportional | when a graph of two variables is a straight line passing through the (0,0) point, the relationship is linear and the variables are said to be this |
| Vary Inversely | a term used to describe the relationship between two variables whose graph forms a curve that slopes downwards |
| Force/Area | Pressure |
| Pa | n/m2 |
| Force | Newtons measure |
| Area | Square Meters mearure |
| Pressure | Pascals measure |
| The thermal energy increases volume. | How does the thermal energy of water change as it melts? |
| Crysalline solid particles form a regular, repeating patten and melt at a distint temperature and amorphous solid particles are not arranged in regular pattern and melt over a range of temperature. | How do Crystalline solids differ from amorphous solids? |
| Temperature | measure of the average energy of random motion of the particles of a substance |
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