Eduqas A Level Physics
Eduqas A Level Physics 1.7 Kinetic Theory Exam Questions
Free Eduqas A Level Physics exam questions on 1.7 Kinetic Theory, with mark schemes. Covers the ideal gas equation, gas laws, the kinetic model and molecular speeds.
1.7 Kinetic Theory 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.
StemUp mark scheme flashcards
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.
View flashcards
About Eduqas A Level Physics 1.7 Kinetic Theory
This topic links microscopic motion to gas pressure.
What you need to know
- Ideal gas equation pV = nRT = NkT.
- Gas laws Boyle's law, Charles's law and the pressure law.
- Kinetic model Assumptions and p = ⅓ρc²rms.
- Mean kinetic energy ½mc²rms = 3/2 kT.
Common mistakes in 1.7 Kinetic Theory
- Using Celsius instead of kelvin.
- Confusing n (moles) and N (molecules).
- Forgetting root mean square speed.
Try three 1.7 Kinetic Theory 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. Explain how gas molecules exert pressure. (2 marks)
Show the mark scheme answer
Molecules collide with walls and change momentum (1); force per unit area gives pressure (1).
1.7 Kinetic Theory FAQs
What does Kinetic Theory cover?
The ideal gas equation and the kinetic model.
Which practical links here?
Investigating Boyle's law or estimating absolute zero.
What is absolute zero?
0 K, where molecules have minimum kinetic energy.
Revise this topic with flashcards: A Level Physics Flashcards, with mark scheme answers for Anki and Quizlet.
