Calorimetry and Energy Conservation Worksheet

Question 1

A warm object cools while transferring heat to water. What is the sign of q for the object?

1. Positive
2. Negative
3. Zero
4. Always equal to the mass

Question 2

Calculate the heat gained by 50.0 g of water as it warms by 4.0 °C. Use c = 4.18 J/(g·°C).

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Question 3

In an insulated two-sample model, water gains 500 J. What is q for the object that transfers heat to the water?

1. −500 J
2. 0 J
3. +250 J
4. +500 J

Question 4

Explain why a calorimetry calculation may be inaccurate if a substantial amount of heat escapes to the room.

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Question 5

Which bath gains more heat?

1. P
2. Q
3. Both gain equal heat.
4. Neither gains heat.

Question 6

Calculate q for the metal in P. Show how the water result gives the metal result.

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Question 7

What is ΔT for the metal in trial P?

1. −56.0 °C
2. −4.0 °C
3. +4.0 °C
4. +56.0 °C

Question 8

Use P’s data to estimate the metal’s specific heat. Show the heat balance and the substitution into q = mcΔT.

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