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Chap 9 study stack
chap 9
| Term | Definition |
|---|---|
| heat flows from | hot to cold |
| kinetic molecular model | molecules are in constant motion |
| PE+KE= | total internal energy |
| Thermal energy | the sum of all the kinetic energy of an object |
| Thermal energy can only be measured | as it is transfered from one system to another |
| When molecules start moving | they are gaining thermal energy |
| thermal energy is not | temperature |
| temperature is | an objects average kinetic energy |
| transfering kinetic energy is | heating or cooling |
| fiducial points | freezing or boiling point of pure water |
| Kelvin advanteges | no negative |
| Celsius= | 5/9(Fahrenheit-32) |
| Fahrenheit= | 9/5*Celsius+32 |
| Thermal expansion | particles gaining enough energy to literally increase the mass of the object |
| Elictrical resistance | how to measure how well electricity is conducted |
| Viscosity | the measure of liquids resistance to flow |
| Heat is | the quantity of thermal energy that flows from one place to another |
| Conduction | thermal energy transfers through solids |
| Convection | thermal energy transfers through fluids |
| Radiation | Thermal energy that can travel through a vacuum does not require contact with object radiating thermal energy |
| Insulator | stops/absorbs thermal energy |
| Heat capacity | How much energy absorbed compared to change in temperature C=Q/(delta)T |
| Specific heat or specific heat capacity (same thing) | Q=MC(delta)T |
| Latent heat | heat used by the substance to change its state not temperature |
| Triple point | point at which solid liquid and gas can exist at the same time together |
| critical point | the temperature at which more pressure will not make a gas back into a liquid its a gas until it cools |
| Freezing point | Temperature where substances freeze |
| Boiling point | Temperature at which substances change from a liquid to a gas |
Created by:
cherylb923
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