### Critical Thinking Items

## 11.1 Temperature and Thermal Energy

What is 100.00 °C in kelvins?

- 212.00 K
- 100.00 K
- 473.15 K
- 373.15 K

## 11.2 Heat, Specific Heat, and Heat Transfer

The value of specific heat is the same whether the units are J/kg⋅K or J/kg⋅ºC. How?

- Temperature difference is dependent on the chosen temperature scale.
- Temperature change is different in units of kelvins and degrees Celsius.
- Reading of temperatures in kelvins and degree Celsius are the same.
- The temperature change is the same in units of kelvins and degrees Celsius.

What is the specific heat of a substance that requires 5.00 kJ of heat to raise the temperature of 3.00 kg by 5.00 °F?

- 3.33×103 J/kg ⋅° C
- 6.00×103 J/kg ⋅° C
- 3.33×102 J/kg ⋅ ° C
- 6.00×102 J/kg ⋅ ° C

## 11.3 Phase Change and Latent Heat

Assume 1.0 kg of ice at 0 °C starts to melt. It absorbs 300 kJ of energy by heat. What is the temperature of the water afterwards?

- 10 °C
- 20 °C
- 5 °C
- 0 °C