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Themodynamics
Thermal Energy and Temperature
| Question | Answer |
|---|---|
| Absolute Zero | The temperature when there is no kinetic energy; kinetic energy is zero: 0 Kelvin |
| Entropy | Measure of disorder; measure of the “quality” of energy; forces energy to flow warm to cool |
| Expansion-Thermal | The phenomenon of substances changing dimensions with temperature change |
| Heat | Energy that transfers because of temperature difference |
| Heat capacity | The amount of energy per mass per temperature change; ability of a particular substance to accept energy |
| Heat capacity-water | 1 cal/g/C-degree; the highest capacity of any common substance |
| Temperature | Indicates the average kinetic energy of the substance |
| Temperature: Celsius | 0 – 100; water freezes; water boils; |
| Temperature: Kelvin | 0 K = absolute zero; no kinetic energy; same degree size as Celsius |
| Temperature: Fahrenheit | 0 F near ice/salt water slurry; 100 F originally = body temperature |
| Thermodynamics | Thermo = heat; dynamics = flow; flow of heat energy |
| Thermodynamics-1st Law | Heat added = increase in thermal energy + work done by the system; Statement of energy conservation |
| Thermodynamics-2nd Law | Heat flows from only warmer to cooler objects; Also states that entropy of the universe always increases |
| Thermodynamics-3rd Law | Absolute zero is impossible to reach; Perfect order is impossible to reach |
Created by:
brownglarry
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