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Worksheet 3: Heat and heat calculations . Topic 1

Set A: Terms and definitions Objective: By defining these words, you should become more
familiar with heat related terms and their definitions.

Define, neatly and clearly, the following heat related terms.
1. Heat

2. Joules

3. Specific heat capacity

4. Heat of fusion

5. Heat of vaporization

6. Calorimeter

Set B: Direction of heat flow Objective: To test your ability to determine direction of heat flow

between two objects.
For each question below, draw an arrow ( ---heat ------- > ) or ( < ------heat---- ) between the two
objects to show the direction that heat will flow between them.

o

7. 67 C 74 C 9. -14 C 250 K
o
o

8. -50 C 10.
o
o
-65 C 390 K 125 C
o

Set C. Heat calculation Objective: To test your ability to set-up and solve heat problems.

For each question below: Write down heat equation to use, set up, and solve the heat problem.
Show all work in the space to the right of the question.

11. How much heat is absorbed when a 10-g sample
o
o
of water changes its temperature from 23 C to 32 C?

12. How much heat is released by a 15 gram sample of
o
o
water to cool from 50 C to 46 C?

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