Physics · May / June 2017 · Paper 11 · Question 20
5054Particle model
A substance consists of particles that are close together and moving past each other at random. The average speed of the particles is gradually increasing. What best describes the substance?
- Aa gas being heated
- Ba liquid being heated
- Ca liquid undergoing solidification
- Da solid being heated
As printed in the paper
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Correct answer: B. a liquid being heated
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