Chapter 14: Thermodynamics Flashcards
The transfer of internal energy
Heat
Measurement of an object’s molecular kinetic energy and molecular potential energy
Internal energy
Energy of an objects atoms or molecules
Thermal energy
Formula for finding newton temperature
Tb = Nb/Ntp(273.16K)
Expansion along the line through any solid is called
Linear expansion
Linear expansion formula
ΔL = αL1ΔT
Area expansion formula
ΔA = γA1ΔT
Volume expansion formula
ΔV = βV1ΔT
Heat of fusion
The amount of heat that must be absorbed per gram to melt a solid
Equation to find the amount of heat absorbed by a melting solid
Q = mLf
Equation to find the amount of heat lost by freezing liquid
Q = -mLf
Heat of vaporization
The amount of energy a liquid absorbs at its boiling point to change into a gas
Process of measuring temperature
Thermometry
State at which two objects in contact with one another have the same temperature
Thermal equilibrium
The point where the three phases of water are in equilibrium is known as the
Triple point of water
Established the Fahrenheit scale
Gabriel Daniel Fahrenheit
Established the Celsius scale
Anders Celsius
Established the Kelvin scale
William Thompson (i.e. Lord Kelvin)
1 calorie is equal to how many joules
4.184
He required to raise the temperature of a body by one degree
Heat capacity
The amount of heat required to raise the temperature of the unit mass by 1°
Specific heat
To convert from Celsius to Fahrenheit
Tf = (9/5)Tc + 32
Heat required to raise 1 kg of water from 14.5°C to 15.5°C
1 calorie
The amount of heat required to raise 1 pound of water from 63°F 64°F
One BTU
One BTU equals how many kilocalories
Approximately one fourth
The law of heat exchange states
The amount of heat lost by one body is equal to the amount of heat gained by another
The amount of heat that must be absorbed per gram to melt a solid
Heat of fusion
The amount of energy and liquid absorb that it’s boiling point before changes into a gas
Heat of vaporization
Heat of vaporization for water is equal to
2260 J/g
The heat of fusion of water is approximately
333 J/g
Transfer of heat energy from one part of the body to another
Heat conduction
Heat transfer caused by the contact of two molecules
Conduction
Heat transfer caused by moving material/waves
Convection
Heat transfer caused by the admission of radioactive waves
Radiation
