IPC Chapt. 16-Heat and Temp
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What is the total energy of molecular motion in a substance. |
Heat |
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What is the measurement of the average energy of molecular motion in a substance |
Temperature |
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Does Temperature depend on the size or type of the object |
NO! |
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Is Temperature energy? |
No it is a measure of it. |
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Heat is ______. |
energy |
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The heat of fusion and heat of vaporization is what? |
thermal energy |
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If a higher temperature object is in contact with a lower temp. one, heat transfers to the lower one. What is that called |
Thermal equilibrium |
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What is conduction? |
the movement of one molecule to another , it needs direct contact and heat flows from a higher temp. area to a lower temp. one. |
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The movement of heat by currents in liquids or gases, circulation through a fluid and cool air sinks down while warmer air rises to the top is called what? |
Convection |
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Radiation is what? |
energy movement through electromagnetic waves, a way in which energy is transferred from place to place in the form of waves. |
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Define specific heat. |
The amount of thermal energy needed to raise the temp. of 1 g. of a substance 10 C. |
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Know the 3 states of matter and be able to identify them |
solid |
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A theory that defines thermal energy as a substance that flowed from hot bodies into cold bodies. |
Caloric theory |
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Define thermal energy. |
the total energy of the particles in an object related to the motion of the molecules or ions in matter. |
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Know the differences between temperature and thermal energy. |
Temp-measures the average kinetic energy of an objects particles. |
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Know the differencr between the heat of fusion and heat of vaporization. |
Heat of fusion is: the amount of thermal energy needed to change a substance from solid to liquid. |
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An increase in the volume of a substance caused by the addition of thermal energy is what? |
thermal expansion |
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Why are calories important to a person's diet: |
Daily requirements of calories for health reasons. |
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Degrees are what |
Unit for Temperature |
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Water freezes at ______Fahrenheit? |
32 |
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Water freezes at _____ Celsius? |
0 degrees |
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Water boils at ___ Fahrenfeit? |
212 degrees |
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Water boils at _____ celsius? |
100 degrees |
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What is the measurement of the average kenetic energy of les in a objectall the particles? |
Temperature |
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If particles in an object move more quickly, their average kinetic energy energy_____ and the object's temperature ___. |
increases |
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What energy is the total energy of the particles in a material? |
Thermal energy |
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What three things can heat be? |
1) transferred from one object to another. |
