Question 21
Question 21 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
2. Thermal physics
2.2.3. Melting, boiling and evapora...

Describe latent heat as the energy required to change the state of a substance and explain it in terms of particle behaviour and the forces between particles

2. Thermal physics
2.1.2. Particle model

Describe the relationship between the motion of particles and temperature, including the idea that there is a lowest possible temperature (-273°C), known as absolute zero, where the particles have least kinetic energy