Heat Definition In Physics Quiz

10 Questions | By Megansanders | Updated: Mar 22, 2022 | Attempts: 756

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1.

How much heat is given off when 27.0 g of steam condense to boiling water at 100°C?
- A.
  
  61,020 J
- B.
  
  9018 J
- C.
  
  113 J
- D.
  
  2,999 J
2.

How much heat is needed to warm 250.0 g of copper from 22° C to 98° C?
- A.
  
  7315 J
- B.
  
  2117 J
- C.
  
  9433 J
- D.
  
  79,420 J
3.

Which of the following is true when a substance is melting?
- A.
  
  The temperature remains constant.
- B.
  
  Both a solid and a gas can be present.
- C.
  
  Heat is not required for the process since the temperature is constant.
- D.
  
  The heat added is causing the particles to change from a high energy state to a low energy state.
4.

Is this equation an example of an exothermic or endothermic reaction: NaOH (s) + H₂O (l) --> NaOH (aq) + 21 J
- A.
  
  Exothermic
- B.
  
  Endothermic
- C.
  
  Answer option 3
- D.
  
  Answer option 4
5.

If 900 J of heat are added to 100.0 g of water at 25.0 °C. What is the final temperature of the water?
- A.
  
  27.15 C
- B.
  
  25.0 C
- C.
  
  2.15 C
- D.
  
  3.00 C
6.

What causes the process of perspiration to be cooling for human skin?
- A.
  
  It involves evaporation and is endothermic.
- B.
  
  It involves evaporation and is exothermic.
- C.
  
  It involves condensation and is endothermic.
- D.
  
  It involves condensation.
7.

An 8.80 g sample of metal is heated to 92.0 °C and then added to 14.77 g of water at 20.0 °C in an insulated calorimeter. At thermal equilibrium the temperature of the system was measured as 25.0 °C. What is the identity of the metal?
- A.
  
  Titanium
- B.
  
  Lead
- C.
  
  Copper
- D.
  
  Tin
8.

Which best explains the relationship between heat energy and temperature?
- A.
  
  As heat energy decreases and temperature remains constant, condensation occurs.
- B.
  
  As heat energy increases and temperature increases, freezing occurs.
- C.
  
  As heat energy decreases and temperature remains constant, evaporation occurs.
- D.
  
  As heat energy increases and temperature decreases, melting occurs.
9.

Why does it require 5,511 J of heat energy to melt 16.5 g of ice?
- A.
  
  334 J/g of heat energy is absorbed by the ice as it is converted from a solid to a liquid.
- B.
  
  2,260 J/g of heat energy is absorbed by the ice as it is converted from a solid to a liquid.
- C.
  
  4.18 J/g°C of heat energy is required as ice is converted from a solid to a liquid.
- D.
  
  2.05 J/g°C of heat energy is required as ice is converted from a solid to a liquid.
10.

The graph below below shows a substance heating from 40 C to 140 C. If 70 kJ of heat are removed from the substance when it is at 140°C, what will be the state and temperature of the substance?
- A.
  
  Liquid at 60 C.
- B.
  
  Liquid at 10 C.
- C.
  
  Gas at 100 C.
- D.
  
  Gas at 120 C.