particle model of matter

• solids:

  • high density
  • regular pattern
  • vibrated on the spot
• liquids:

  • high density
  • irregualar pattern
• density is mass per volume
• density = mass/volume
• specific latent heat:

  • the amount of energy required to change the state of 1kg of a substance with no temperature change
• melting - specific latent heat of fusion

  evaporation - specific latent heat of vapourisation
• if the temperature is constant pressure is inversly proportional to volume
• gases:

  • have low density
  • irregular arrangment
  • particles are apart
  • rapid movement
  • random movement