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16 Cards in this Set

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Temperature

The measure of the average kinetic energy of molecules of the particles of a substance.

Celsius (centigrade)

Uses the freezing point (0) and the boiling point of water (100) as a reference points to create a temperature measuring scale with 100 degrees between them.

Fahrenheit

Uses the freezing point (32) and the boiling point of water (212) as reference points to create a temperature measuring scale with 180 degrees between them.

Kelvin

Absolute zero forms the basis of the temperature scale known as the absolute scale or Kelvin scale.

Law of Conservation of Energy

States that the total energy in a given system remains constant.

Thermal Equilibrium

Occurs when objects transferring heat and their surroundings reach the same temperature.

Calorimetry

Is based on the Law of Conservation of Energy and assumes that all of the heat lost by the object of high temperature is transferred to the others of lower temperature.

Conduction

The process whereby a transfer of heat takes place between objects that are in direct physical contact with each other.

Convection

The process whereby a transfer of heat takes place due to the movement of a fluid medium (liquid or gas) from one region to another.

Radiation

The process whereby a transfer of heat takes place due to the emission of electromagnetic radiation from an object. Does not need a medium to transfer the heat energy.

Latent Heat

During the actual phase change, the heat added or removed is not detectable since the heat is used in causing the change of state.

Heat of vaporization

The energy per unit mass transferred in order to change a substance from a liquid to a vapor or vice versa.

Heat of fusion

The energy per unit mass transferred in order to change a substance from a solid to a liquid or vice versa.

Sensible Heat

Between the changes of state the heat added or removed is measureable using a thermometer or a thermocouple.

Relationship of thermal energy and work

Heat can be used to do work. During work, energy is transferred to another form as well as some being transferred to heat (internal energy)

Heat energy transfer

Heat is the transfer of energy from an object of higher temperature to one of lower temperature.