Question 25
Question 25 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
2.1.2. Particle model

Describe, qualitatively, the particle structure of solids, liquids and gases, relating their properties to the forces and distances between particles and to the motion of the particles (atoms, molecules, ions and electrons)

2. Thermal physics
2.2.3. Melting, boiling and evapora...

Describe how temperature, surface area and air movement over a surface affect evaporation

3. Waves
3.4. Sound

Know that the speed of sound in air is approximately 330–350m/s