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Chapter 9
| Question | Answer |
|---|---|
| Heat flows from: cold to hot or hot to cold? | hot to cold |
| TE | total energy |
| KE+PE= | TE |
| Thermal energy is the _______ of all the kinetic energies of its particles. | sum |
| __________ ____________ can only be measured as it is transferred from one system to another | thermal energy |
| When molecules start moving more they are gaining what? | kinetic energy |
| Transferring particle kinetic energy, he motion, is called | heating or cooling |
| The temperature of an object is directly related to the __________ kinetic energy of its atoms and molecules. | AVERAGE |
| The fiducial points are the | freezing point and boiling point of water |
| What is the advantage of the Kelvin scale | there are no negative values |
| When particles gain energy and can move away from each other causing the object to gain volume | thermal expansion |
| __________increases with increasing temperature b/c electrons move more randomly | electrical resistence |
| The measure of the resistance of liquids to flow | Viscosity |
| Heat | the quantity of thermal energy that flows from one place to another |
| Conduction | touches |
| Convection | through fluids |
| Radiation | radiates |
| The higher the temperature, the _______ electromagnetic energy | more |
| Can radiant energy transfer between two objects that aren't touching? | yes |
| Radiant energy does ____ ____ ___________ to move between systems | not use matter |
| Does thermal energy need matter to move? | yes |
| Insulators are materials that....? | resist the flow of energy |
| The relationship btwn the amount of thermal energy absorbed and the temperature change caused by this | heat capacity |
| The amount of thermal energy that must be gained or lost to change the temperature of 1g of substance | specific heat |
| Latent heat of fusion | the amount of thermal energy exchanged per gram of material during melting or freezing |
| Latent heat of vaporization | the amount of heat it takes to change a liquid into a gas |
| TRIPLE POINT | the temperature and pressure at which the solid liquid and gas phases exist at the same time |
| the temperature above which a substance will always be a gas regardless of the pressure | critical point |
Created by:
laurelyno
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