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2.1.2. Particle model
A subsection of Physics, 0625, through 2. Thermal physics
Listing 10 of 86 questions
A microscope that produces a very high magnification is used to observe the Brownian motion of smoke particles in air. shows the apparatus used with the microscope. represents the view through the microscope and shows one of the smoke particles being observed. light microscope air molecules and smoke particles smoke particle On , draw a possible path for the smoke particle. Describe how air molecules cause the smoke particle to follow the observed path. shows a volume of gas in a cylinder. gas piston air at atmospheric pressure The piston in the cylinder is free to move. The piston moves to the left when the temperature of the gas is decreased. Explain, in terms of the molecules of the gas, why this happens.
0625_s18_qp_43
THEORY
2018
Paper 4, Variant 3
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Questions Discovered
86