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stack 8
chapter 8
| Term | Definition |
|---|---|
| Melting | From a solid to a liquid |
| Melting point | The temperature at we're just substance melts |
| Freezing | From a liquid to a solid |
| Freezing point | The temperature where it is substance goes into solid |
| Evaporation | Takes place only on the surface of the liquid |
| Boiling | Where vaporation occurs beneath the surface |
| Boiling point | Where the picture reaches the point of boiling on the bottom to the surface |
| Crystalline solid | particles form a regular repeating pattern called crystals. |
| Amorphous solid | particles not arranged in a repeating pattern. |
| Viscosity | A liquid's resistance to flowing. |
| Solid | closely packed particles cause matter to have a definite shape and definite volume. |
| Vaporation | From a liquid to a gas |
| Gas | particles are able to move and spread out filling all space available, thus gasses have no definite shape or definite volume. |
| Pressure | gas particles constantly collide with one another and the walls of their container. Pressure is the outward push divided by the area of the walls of the container. Pressure= Force/Area. |
| Temperature | he higher the temperature the faster particles move. |
| Condensation | When a gas changes to a liquid. |
| Sublimation | When a substance changes straight from a solid to a gas. |
| Liquid | particles are free to move so a liquid has a definite volume but no definite shape. |
| Surface tension | An inward force, or pull among the molecules in a liquid that brings the molecules on the surface closer together. |
| Charles’s Law | When the temperature of a gas at a constant pressure is increased the volume is increased, if the temperature is decreased then the volume is decreased. |
| Directly proportional | as one amount increases, another amount increases at the same rate. |
| Boyle's Law | When the pressure of a gas at a constant temperature is increased the volume is decreases, if the temperature is decreased then the volume is increases |
| Inversely proportional | When the value of one variable increases, the other decreases. |
| Reference point | A place or object used for comparison to determine if something is in motion |
| Distance SI unit | Meter (measures the length of a path between two points) |