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m&m 5.4
Heat and Changes of State
| Question | Answer |
|---|---|
| Melting | The changing of a solid into a liquid |
| Melting point | The temperature at which melting occurs |
| Freezing | The changing of a liquid into a solid |
| Freezing point | The temperature at which freezing occurs |
| Solutes | Substances which dissolve in a liquid |
| Latent heat | The "hidden" heat absorbed or released when a substance undergoes a change of state |
| Heat of fusion | The latent heat required to change a given mass of a solid into a liquid without changing its temperature |
| Evaporation | The change of a substance from a liquid into a gas |
| Volatile | Liquids which evaporate rapidly |
| Nonvolatile | Liquids which evaporate slowly |
| Boil | When evaporation occurs throughout the liquid |
| Boiling point | The temperature at which a substance boils |
| Heat of vaporization | The quantity of heat required to change a given amount of liquid already at its boiling point into gas without raising its temperature |
| Condensation | The process of a gas changing into a liquid |
| Saturation point | When the amount of water evaporating equals the amount condensing |
| Dr. John Gorrie | The man who created the first mechanical cooling system |
| Sublimation | When a gas may change directly into a solid by the same process |
| Plasma | The fourth state of matter |
Created by:
Jer Stephens
on 2011-01-12