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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