WJEC A Level Physics
WJEC A Level Physics 3.3-3.4 Kinetic Theory and Thermal Physics Exam Questions
Free WJEC A Level Physics exam questions on 3.3-3.4 Kinetic Theory and Thermal Physics, with mark schemes. Covers the ideal gas equation, kinetic theory, internal energy and the first law of thermodynamics.
3.3-3.4 Kinetic Theory and Thermal Physics exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Physics Flashcards
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Pick your exam board, then test yourself with the questions on this page.
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About WJEC A Level Physics 3.3-3.4 Kinetic Theory and Thermal Physics
This topic covers gas behaviour and heat transfer.
What you need to know
- Ideal gas equation pV = nRT = NkT.
- Gas laws Boyle's law, Charles's law and the pressure law.
- First law ΔU = Q − W (sign convention per spec).
- Specific heat capacity Q = mcΔθ.
Common mistakes in 3.3-3.4 Kinetic Theory and Thermal Physics
- Using Celsius instead of kelvin.
- Confusing n (moles) and N (molecules).
- Mixing up sign conventions.
Try three 3.3-3.4 Kinetic Theory and Thermal Physics exam-style questions
1. Find the moles in 0.024 m³ of gas at 1.0 x 10⁵ Pa and 290 K. (1 mark)
Show the mark scheme answer
n = pV/RT = 1.0 mol.
2. State one assumption of the kinetic model. (1 mark)
Show the mark scheme answer
Collisions are elastic, or molecules have negligible volume.
3. State the first law of thermodynamics. (1 mark)
Show the mark scheme answer
The increase in internal energy equals heat supplied minus work done by the system.
3.3-3.4 Kinetic Theory and Thermal Physics FAQs
What does Thermal Physics cover?
Internal energy, the first law and heat capacity.
Which practical links here?
Measuring specific heat capacity.
Why insulate the block?
To reduce heat losses that would give too high a value for c.
Revise this topic with flashcards: A Level Physics Flashcards, with mark scheme answers for Anki and Quizlet.
