CAIE IGCSE Physics 2.1.2 Particle Model Topic Practice

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Covered syllabus points

2.1.2.1—Particle structure of solids, liquids2.1.2.2—Relationship between the motion of2.1.2.3—Pressure and the changes in pressure2.1.2.4—Random motion of microscopic particles2.1.2.5—And explain this motion (sometimes2.1.2.6—Forces and distances between particles2.1.2.7—Pressure and the changes in pressure2.1.2.8—Microscopic particles may be moved by

Question 1

[Maximum number: 1]

Fig. 3.1 shows a small block of ice floating in a beaker of warm water.

Fig. 3.1

Fig. 3.1

State one way in which the motion of the particles in ice differs from the motion of the particles in water.

Question 2

[Maximum number: 1]

The lowest possible temperature is zero kelvin ( 0 K ).

State the name of this lowest possible temperature.

Question 3

[Maximum number: 3]

Describe, in terms of particles, how a gas exerts a pressure on the walls of its container.

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