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Chapter 2 : Materials and their structure

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  • The particles vibrate and they can move around by sliding past each other freely.
    liquid
  • What is the difference between boiling and evaporation?
    direct heating process / slow heating process
  • what is x
    melting
  • What is the change of state happen on the picture
    condensation
  • They do not have a fixed shape. They change their shape depending on the container they are in
    liquid and gas
  • Name five things that can melt
    Ice cream, snow, butter, ice, cheese
  • cannot be compressed and fix volume
    liquid and solid
  • name the process if a liquid changes to gas
    evaporation
  • What is the state of matter shows in the picture?
    solid
  • What is the change of state happen on the picture
    evaporation
  • What two things need to change for matter to change state?
    temperature and pressure
  • name the process when the liquid changes to solid
    freezing
  • The molecules are vibrates about a fixed position but they cannot move pass one another
    solid
  • Even when they change their shape, they always take up the same amount of space. Their volume stays the same
    liquid
  • name five solid around us.
    table, chair, glass, bottle, shoes, tshirt (other reasonable answer)
  • which arrow represent condensation process
    correct arrow
  • using particle theory, explain the evaporation process.
    keyword heat, vibration, attractive force, become ....
  • name the process when the solid changes to liquid
    melting
  • Name five things that can boil
    Water, coffee, tea, lava, hot chocolate
  • weak attractive forces between the particles
    liquid
  • Molecules are free to move and sometimes collide with each other
    gas
  • What is  the change of state happen on the picture
    melting
  • The particles are packed closely together
    solid
  • They spread out/expand and change their volume to fill up whatever container they are in.
    gas
  • name the process if a gas changes to liquid
    condensation
  • no fix volume
    gas
  • The molecules are strongly attracted to one another by a strong attractive forces
    solid
  • They have a fixed shape
    solid
  • name three liquids that you know.
    juice, milk, pipe water, mineral water (any reasonable answer)
  • What is the change of state happen on the picture
    evaporation
  • can be compressed
    gas
  • No force of attraction between particles
    gas
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