Gas Law Claims and Experimental Controls Worksheet

Question 1

To isolate the effect of temperature on gas volume for a fixed sample, which condition should remain fixed?

1. Temperature
2. Pressure
3. Volume
4. Both temperature and volume

Question 2

Explain why a larger final volume alone cannot prove that the gas temperature increased.

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Question 3

Two ideal-gas readings have the same pressure and amount. Which temperature ratio predicts a doubling of volume?

1. T₂/T₁ = 1/2 in Kelvin
2. T₂/T₁ = 1 in Kelvin
3. T₂/T₁ = 2 in Kelvin
4. T₂/T₁ = 2 using any temperature scale

Question 4

Explain why a leaking container can make the combined gas law fail to predict a change in its gas volume.

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Question 5

Which pair isolates a pressure change while holding the temperature at 300 K?

1. A and B
2. A and C
3. B and C
4. C and D

Question 6

Calculate the volume ratio V(B)/V(A) and temperature ratio T(B)/T(A). Round both to two decimal places.

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Question 7

A student says the volume change from A to D measures only the effect of warming. Use the trial data to evaluate the claim.

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Question 8

If the pressure stays at 120 kPa, what volume does the ideal model predict at 360 K starting from C?

1. 0.83 L
2. 1.00 L
3. 1.20 L
4. 1.44 L