Cambridge IGCSE Physics2.1 Kinetic particle model of matter Worksheet

18 questions · 44 marks · Word

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What objectives does this worksheet meet?

Core

  • I know the properties that distinguish solids, liquids and gases.
  • I know the names of the changes of state between solids, liquids and gases (changes from gas to solid and from solid to gas are not needed).
  • I can describe the particle structure of solids, liquids and gases in terms of how the particles are arranged, how far apart they are and how they move, and I can show these states in simple particle diagrams.
  • I can describe how the motion of particles is related to temperature, including the idea of a lowest possible temperature (−273 °C), called absolute zero, at which the particles have the least kinetic energy.
  • I can describe the pressure of a gas, and changes in that pressure, in terms of the motion of its particles and their collisions with a surface.
  • I can describe qualitatively, in terms of particles, how the pressure of a fixed mass of gas is affected by:a)a change of temperature at constant volumeb)a change of volume at constant temperature
  • I can convert temperatures between kelvin and degrees Celsius, and I can recall and use the equation T (in K) = θ (in °C) + 273.
  • I know that the random motion of microscopic particles in a suspension is evidence for the kinetic particle model of matter.
  • I can describe and explain this motion (sometimes called Brownian motion) in terms of random collisions between the microscopic particles in a suspension and the particles of the gas or liquid.

Extended

  • I know that the properties of solids, liquids and gases depend on the forces and distances between their particles (atoms, molecules, ions and electrons) and on the motion of the particles.
  • I can describe the pressure of a gas, and changes in that pressure, in terms of the forces exerted by particles colliding with surfaces, which creates a force per unit area.
  • I know that microscopic particles can be moved by collisions with light, fast-moving molecules, and I use the terms atoms or molecules correctly, as distinct from microscopic particles.
  • I can recall and use the equation pV = constant for a fixed mass of gas at constant temperature, including showing this relationship on a graph.