PHYSICS 3.3 FIRST LAW OF
THERMODYNAMICS EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
Heat Transfer Equation - ANSWER-q = mcΔT
q=heat
m=mass
c=specific heat of the substance
delta T= change in temp
Phase change occurs at..... - ANSWER-a constant temperature
Condensation - ANSWER-Gas to liquid
Evaporation - ANSWER-Liquid to gas
Fusion/Melting - ANSWER-solid to liquid
Sublimation - ANSWER-solid to gas
Freezing/Solidifying - ANSWER-liquid to solid
Deposition - ANSWER-gas to solid
Heat of transformation equation - ANSWER-Q = mL
m=mass
L=latent heat of a substance/heat of transformation
Melting Point - ANSWER-the temperature at which a substance changes from a solid to
a liquid
Boiling Point - ANSWER-the temperature at which a substance changes from a liquid to
a gas
Heat of Fusion - ANSWER-the energy a substance must absorb in order to change from
a solid to a liquid
Heat of Vaporization - ANSWER-the energy a substance must absorb in order to
change from a liquid to a gas
THERMODYNAMICS EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
Heat Transfer Equation - ANSWER-q = mcΔT
q=heat
m=mass
c=specific heat of the substance
delta T= change in temp
Phase change occurs at..... - ANSWER-a constant temperature
Condensation - ANSWER-Gas to liquid
Evaporation - ANSWER-Liquid to gas
Fusion/Melting - ANSWER-solid to liquid
Sublimation - ANSWER-solid to gas
Freezing/Solidifying - ANSWER-liquid to solid
Deposition - ANSWER-gas to solid
Heat of transformation equation - ANSWER-Q = mL
m=mass
L=latent heat of a substance/heat of transformation
Melting Point - ANSWER-the temperature at which a substance changes from a solid to
a liquid
Boiling Point - ANSWER-the temperature at which a substance changes from a liquid to
a gas
Heat of Fusion - ANSWER-the energy a substance must absorb in order to change from
a solid to a liquid
Heat of Vaporization - ANSWER-the energy a substance must absorb in order to
change from a liquid to a gas