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2.1.3a The absolute scale of temperature

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Question 20
a.

In terms of the momentum of molecules, explain how a gas exerts pressure on the walls of its container.

[4]
b.

A fixed mass of gas of volume V1V_1V1​ is at a pressure p1p_1p1​. It expands to a volume V2V_2V2​.

Complete the equation for the final pressure p2p_2p2​ of the gas when the gas expands at constant temperature.

p2= p_2 = p2​=
[1]
c.

A fixed mass of gas of volume V1V_1V1​ is at a pressure p1p_1p1​. It expands to a volume V2V_2V2​.

State and explain how the final pressure compares with p2p_2p2​ when the temperature of the gas decreases during the expansion.

  • Statement:
  • Explanation:
[3]
Markscheme

2.1.3a The absolute scale of temperature Questions

  1. IGCSE
  2. /Physics
  3. /2.1.3a The absolute scale of temperature

126 exam-style questions on CIE IGCSE Physics 2.1.3a The absolute scale of temperature. Each one has a worked solution and a mark scheme showing where the marks go.

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