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Definition
| the total energy of all atoms and molecules of a substance includes both kinetic and potential energy |
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| how warm or cold something is measures the average kinetic energy of the particles of a substances |
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| temperature scale divided into 100 equal units between boiling (100) and freezing (0) for h2o |
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| temperature scale with boiling (212) and freezing (32) for h2o |
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| fourth state of matter exists inside stars. temp. millions of degrees Celsius |
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| the temperature at which all molecular motion stops (o kelvin) |
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Term
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Definition
| named for lord kelvin (0)K is absolute zero no negative numbers, degrees are the same size as Celsius, 273 K is freezing, 373 K is boiling |
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| equation for temperature conversion of Celsius |
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Definition
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| equation for the temperature conversion of Fahrenheit |
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Definition
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| equation for the temperature conversion of Kelvin |
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Definition
| thermal energy transferred from one substance to another due to temperature change, matter doesn't contain heat, matter contains thermal energy therefore heat is thermal energy in transit |
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Definition
| a substance that lacks thermal energy |
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| the amount of heat required to raise the temperature of one gram of h2o by one degrees Celsius 4.2J |
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| first law of thermodynamics |
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Definition
| (law of conservation of energy) whenever heat flows into or out of a system, the loss or gain of thermal energy equals the amount of heat transferred energy cannot be created or destroyed |
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Definition
| any substance or well defined group of atoms, molecules or objects |
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| second law of thermodynamics |
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Definition
| heat never spontaneously flows from a cold substance to a hot substance |
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Definition
| a quantitative measure or disorder or randomness |
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| third law of thermodynamics |
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Definition
| no system can reach absolute zero |
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Definition
| the quantity of heat required to change the temperature of a substance by one degrees Celsius |
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| heat absorbed or released equation |
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Definition
| specific heat * mass * change in temperatures |
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Definition
| expansion of a substance due to increased molecular motion in the substance |
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Definition
| used in thermostats, thermometers and refrigerators act as switches |
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