Heat: The Nature of Heat Flashcards
Thermal Energy
an object in its internal energy due to the random motion of molecules
Heat
transfer of thermal energy from an object of higher temp to an object of lower temp
Heat capacity
the amount of heat needed to change its temp by a certain amount
calorimeter
a device designed to measure the heat involved in physical and chemical changes
Thermostat
a device that automatically regulates temperature
Thermodynamics
branch of physics that deals with thermal energy, heat, and their relationships to other forms of energy
System
matter or portion of the universe being studied
Surroundings
the entire universe except for the system, only the immediate surrounding need to be considered
Mechanical Equivalent of Heat
relationship between mechanical energy and heat
Carnot Engine
a theoretical device that would generate the maximum possible amount of work from a given amount of heat
Freezing Point
the temperature at which a liquid changes to a solid
Heat of Fusion
latent heat required to change a given mass of a solid into a liquid without changing its temperature
volatile
liquids that evaporate rapidly
nonvolatile
liquids that evaporate slowly
Boiling
when evaporation occurs throughout the liquid, temp at which a liquid boils
