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chapter 16
| Question | Answer |
|---|---|
| kinetic theory | The body of theory that explains the physical properties of matter in terms of the motions of its constituent particles. |
| melting point | The temperature at which a given solid will melt. |
| heat of fusion | heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature; |
| boiling point | The temperature at which a liquid boils and turns to vapor. The boiling point for fresh water at sea level is 212°F (100°C).The point at which anger or excitement breaks out into violent expression: "racial tension surges to boiling point". |
| heat of vaporization | heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature. |
| diffusion | The spreading of something more widely. The action of spreading the light from a light source evenly so as to reduce glare and harsh shadows. |
| plasma | matter consisting of positively and negatively charged particles. |
| thermal expansion | Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. All materials have this tendency. |
| buoyancy | The ability or tendency to float in water or other fluid. The power of a liquid to keep something afloat. |
| pressure | amount of force exerted per unit area;si unit is the pascal |
| viscosity | a fluid's resistance to flow. |
| pascal | SI unit of pressure |
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