Chapter 2 Introduction to Thermodynamics

Question 1

The change in temperature from the freezing point of water to the boiling point of water at standard atmospheric pressure is:

a) 180 F
b) 460 R
c) 273K
d) 273 C

Answer 1

180 F

Question 2

Heat is added to a substance and there is no change in temperature:

a) It is called latent heat
b) The temperature is 273 C
c) It is called sensible heat
d) It is the heat of fission

Answer 2

It is called latent heat

Question 3

When there is a transfer of heat due to the change in density within a fluid, the process is called:

a) Conduction
b) Radiation
c) Evaporation
d) Convection

Answer 3

Convection

Question 4

When water ‘flashes’ into steam:

a) Its temperature will increase
b) Its mass will decrease
c) it expands by almost 1700 times
d) It will melt the tubes in the boiler

Answer 4

it expands by almost 1700 times