4.1. Basic principles
4.1.6. Temperature and heat

Temperature and heat

Temperature vs Heat

Temperature

Thermal state of a substance which determines the direction of heat flow between it and environment or another substance, with heat being transfered from higher temperature to lower temperature.

Heat

A form of energy that can be transfered from higher temperature object/region to lower temperature object/region, the energy being in the form of kinetic energy of the molecules of the substance.

Units

Heat

Heat being a form of energy, unit is Joule (J)

Temperature

SI unit is Kelvin (K)

1 Kelvin = 1/273.16 of the temperature of triple point of water

Other notes

Heat capacity

Specific heat capacity - the amount of heat required to raised the temperature of 1 kg of a substance by 1 kelvin.
* Unit = J/kg/K

Heat capacity - the amount of heat required to raise the temperature of a given object by 1 kelvin
* Unit = J/K

Tissue specific heat capacity is approximately 3.5kJ/kg/C

Solubility

Solubility is constant for a particular gas and a particular liquid at a particular temperature.

Solubility of gas usually drops with rising temperature.

Keywords:  Heat ; Heat capacity ; Specific heat capacity ; Temperature
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Created20050526
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