Chapter 11: Energy in Thermal Processes

Question 1

2 different objects are supplied with an equal amount of heat. Which one or more of the following statements explains why their temperature changes would not necessarily be the same.
Select one:
a. The objects have the same mass and are made from the same material
b. The objects have the same mass but are made from materials that have different specific heat capacities
c. The objects are made from the same material but have different masses
d. (b) and (c)

Answer 1

d. (b) and (c)

Question 2

For two objects with different sizes, masses, and temperature placed in thermal contact, energy travels from
Select one:
a. the object at higher temperature to the object at lower temperature
b. the larger object to the smaller object
c. the object with more mass to the one with less mass

Answer 2

the object at higher temperature to the object at lower temperature

Question 3

If an ideal gas A is thermally in contact with ideal gas B for a significant time, what can you say about TA versus TB?
Select one:
a. TA >TB
b. TA = TB 
c. TA < TB

Answer 3

TA=TB

Question 4

In a calorimetry experiment, 3 samples A, B, and C with TA  > TB  > TC  are placed in thermal contact. When the samples have reached thermal equilibrium at a common temperature T, which one of the following must be true?:
Select one:
a. QA  >  QB  > QC
b. QA  < 0 , QB  < 0, and QC > 0 
c. TA > T < TC

Answer 4

TA > T < TC

Question 5

The specific heat of aluminum is higher than that of iron. 1 kg blocks of iron and aluminum are heated to 100.0°C, and each is then dropped into its own 1 L beaker of 20.0°C water. Which beaker will end up with the warmer water?
Select one:
a. Beaker with Aluminum
b. Both Beakers with Aluminum and Iron will end up with same temperature.
c. Beaker with Iron

Answer 5

Beaker with Aluminum

Question 6

Which of the following statement is true:
Select one:
a. When H20 in the vapour phase condenses it cools the surrounding air
b. When H20 in the vapour phase condenses it warms the surrounding air only if the air temperature is below 00C
c. When H20 in the vapour phase condenses it warms the surrounding air
d. When H20 in the vapour phase condenses the temperature of the surrounding air is not affected

Answer 6

When H20 in the vapour phase condenses it warms the surrounding air

Question 7

You have 10 kg of liquid water and 10 kg of steam. If you want to increase the temperature of both of them by 10.0°C, which would require more added energy
Select one:
a. It cannot be determined because it depends on the actual temperature of the water and steam as well as the pressure.
b. the water
c. They both require the same amount of energy to be warmed 10.0°C.
d. the steam

Answer 7

the water