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6. Describe the movement of particles in a solid.

  • vibrate about in a fixed position
  • none
  • move around each other
  • move quickly in any direction

7. What is meant by the term 'pressure'?

  • the amount of energy needed to move a material
  • the amount of energy needed to heat a material
  • a force exerted over an area.
  • the amount of space which a substance occupies

8. What process is this when a gas changes to a liquid?

  • condensing
  • melting
  • freezing
  • boiling

9. Describe the arrangement of particles in a liquid.

  • far apart: random
  • close together: regular pattern
  • close together: random
  • far apart: regular pattern

10. Describe the movement of particles in a liquid.

  • none
  • move around each other
  • move quickly in any direction
  • vibrate about in a fixed position

11. Why can gases be compressed or squashed?

  • the particles can move quickly in all directions
  • the particles are far apart and have no space to move into
  • the particles are far apart and have space to move into
  • the particles are close together and have no space to move into

12. Describe the arrangement of particles in a gas.

  • close together: random
  • far apart: random
  • close together: regular pattern
  • far apart: regular pattern

13. When a gas is heated, what will happen to the particles?

  • they will move more slowly. This means the particles will collide with the walls less frequently
  • they will gain kinetic energy which will make them move faster. This means the particles will collide with the walls more frequently
  • the particles will gain energy and eventually escape from the container
  • The particles will expand and take up more space so they are harder to compress

14. Why can't solids be compressed or squashed?

  • the particles can move quickly in all directions
  • the particles are close together and have no space to move into
  • the particles are far apart and have space to move into
  • the particles can move around each other

15. Describe the arrangement of particles in a solid.

  • far apart: regular pattern
  • far apart: random
  • close together: regular pattern
  • close together: random