Heat And Thermo Question Preview (ID: 40525)


Conceptual Review. TEACHERS: click here for quick copy question ID numbers.

What is the unit for energy that is added or removed to change temperature?
a) Joule
b) Watt
c) m/s
d) Newton

If a system has low entropy (less disorder), does that determine how much work can be done?
a) There is more energy available to do work
b) There is less energy available to do work
c) There is no energy to do work
d) energy won't exist

As you increase the entropy of a system
a) The more energy there is available to do work
b) no work is done
c) the energy available to do work stays the same
d) The less energy available to do work

In order to change temperature, what must happen to the amount of energy?
a) Energy doesn't change with temperature change
b) Energy is only added to change temperature
c) Energy is only removed to change temperature
d) Energy must be added or removed

Temperatures increase when
a) energy is removed as heat
b) energy has been removed as work
c) energy is added as heat
d) energy is added as work

If a gas does positive work, what happens to the volume of the gas?
a) It increases
b) It decreases
c) It remains the same
d) There is no volume

you raise the temperature of water from 20 degrees to 40 degrees. How would you describe the change in kinetic energy of the water molecules?
a) The energy would increase due to the increase in temperature
b) The energy would decrease due to the increase in temperature
c) The energy would remain constant and wouldn't change
d) The energy is destroyed

one glass of water has a temperature of 40 degrees. Another has a temperature of 80 degrees. If you mixed the two together, predict what the temperature would be
a) less than 40 degrees
b) more than 80 degrees
c) the temperature would fluctuate rapidly
d) Between 40 and 80 degrees (around 60 degrees)

What does it mean for something to be in thermal equilibrium?
a) heat travels from low temperatures to high temperatures
b) heat increases rapidly
c) no net energy as heat is exchanged
d) The masses of two systems are equal

How is energy transferred as heat directed?
a) from a low temperature to a high temperature
b) from low kinetic energy to high kinetic energy
c) from low temperatures to low temperatures
d) from a high temperature to a low temperature

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