# Heat Flashcards

The quantity of heat required to raise the temperature of one pound (.4kg) of water 1d F.

British Thermal Unit (Btu)

A unit of heat equal to 100,000 BTU

Therm

The base SI unit of temperature equal to 1/273.16 of the triple point of water.

Kelvin / K

The particular temperature and pressure at which the liquid, gaseous, and solid phases of a substances can exist in equilibrium.

Triple Point

A unit of heat equal to the quantity of heat required to raise the temperature of one gram of water 1dC at a pressure of one atmosphere, equivalent to 4.186 joules.

Calorie, Gram Calorie, Small Calorie

A temperature scale in which 32dF represents the freezing point and 212dF the boiliding point of water under standard atmospheric pressure.

Fahreinheit Scale

*when you know degrees Celsius, first mltiply by 9/5 and then add 32 to find degrees Fahrenheit.*

A temperature scale divided into 100 degrees, in which 0dC represents the freezing point and 100dC the boiling point of water under standard atmospheric pressure.

Celsius Scale or Centigrade Scale

*When you know degrees Fahrenheit first subtract 32 and then multiply by 5/9 to find degrees Celsius.*

An absolute scale of temperature having a zero point of -273.16dC.

Kelvin Scale

The hypothetical lowest limit of physical temperature characterized by complete absence of heat, equal to -273.16dC or -459dF.

Absolute Zero

Temperature as measured on an absolute scale.

Absolute Temperature

The quantity of heat required to raise the temperature of a substance by one degree,

Heat Capacity

Heat capacity per unit mass of a substance: the number of Btu required to raise the temperature of one pound of a substance 1dF, or the number of calories per gram per degree centigrade.

Specific Heat

The quantity of heat absorbed or released by a substance during a change in phase at constant temperature and pressure.

Latent Heat

The quantity of heat absorbed or released by a substance during a change in temperature without a change in phase.

Sensible Heat