Explain, in terms of the behaviour of molecules, how a gas exerts a pressure on the walls of its container. (4)

This question is 4 marks so you need to make at least 4 points.

These types of questions just require memorising the 4 points:

Lots of molecules collide with the walls.

The molecules change momentum as they collide with the walls.

Force is the rate of change of momentum.

Pressure = force/area.

Remember these 4 points and you'll get full marks for the question.

JF
Answered by Jake F. Physics tutor

23073 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Resolving the forces for an object suspended on two strings.


A student studied how a few parameters of the electromagnetic radiation affects the I-V(current-voltage) curve of photoelectricity. By increasing one parameter he saw that the saturation current has risen. Which parameter it was?


How does the strong nuclear force between two nucleons varies with separation of the nucleons. Please detail the range over which the force acts.


A gold leaf electroscope with a zinc plate top is charged by briefly connecting it to the negative electrode of a high-voltage supply. Explain how the gold leaf will appear and how the leaf can be caused to drop again.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning