Chapter 4 Vocab
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British thermal unit
Amount of energy needed to increase the temperature of 1 pound of water 1 degree Fahrenheit
Calorie
Amount of energy needed to increase the temperature of1 gram of water 1 degree Celsius
Celsius scale
Identifies the freezing point of water. As 1 degree Celsius and boiling point as 100 degree Celsius.
Conduction
Transfer of energy from molecule to molecule
Convection
Transfer of heat by a large scale displacement of groups of molecules with relatively hire kinetic energy
Entropy
A thermodynamic measure of disorder
External energy
The total potential and kinetic energy of an every day sized object
Internal energy
Total kinetic and potential energy of the molecules of an object
Fahrenheit scale
Boil 212 frz 32
First law of thermodynamics
Energy supplied to a thermodynamic system in the form of heat minus the work done by the system, is equal to the change in internal energy
Heat
Is the measure of internal energy that has been absorbed or transferred from one body to another *ability to do work in motion
Internal energy
Total kinetic energy and potential energy of the molecules of an object
Kelvin scale
Absolute temperature scale
Kilocalorie
Amount of energy (or heat) needed to increase the temperature of 1 pound of water
Kinetic molecular theory
Hat all matter is made up of tiny basic units of structure called atoms
Latent heat of fusion
Heat involved in a solid liquid phase change in melting or freezing
Latent heat of vaporization
Heat involved in a liquid gas phase change where there is evaporation or Condensation
Molecule
Defined as the smallest particle of a compound or a gaseous element that can exist and still retain the characteristic properties of that substance
Phase change
A quantity of heat that is not associated with a temperature change