Matter and Pressure KS3 Y8

Solids
1. Keep there shape and volume
2. Atoms vibrate in fixed positions
Liquids
1. Change shape, can flow
  1. Atoms move more free than solids
2. Volume can't change
Gases
1. Can be compressed
2. A fluid
3. No fixed volume
Evaporation
1. Change of state
  1. Liquid to gas
    1. One particle on the surface on the water
      1. Gets a harder push
      2. Particles left behind have lost energy
        Get colder
    2. Slow proccess
      1. Occur at different temperature
Boiling
1. Quick proccess
2. Can only occur at certain temperatures
Expansion of solids
1. Particles move further away from eachother
2. Vibration and collision
3. Metal gains volume
  1. Bends upwards
Pressure
1. Force/ Area
  1. P=F/A
2. More pressure on a smaller facet
  1. More pressure pushed on a certain area
3. Larger area
  1. Less concentration
Pressure in liquids
1. Depth*Gravitational pull*density
  1. P=h*g*p
  2. Pascal
    1. 1N/CM(2)
    2. 10000N/M(2)
Pressure in gases
1. Collide with walls
  1. A force in each collision
  2. When compressed more collisions
    1. Less surface area
2. When it is heated
  1. Particles move quicker
    1. Collide more

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