particle model

• density =

  mass divided by volume
• density is ther amount of mass and how

  tightly packed the matter is
• gas is less dense while solid is more

  dense

  
• density is measured in measured in

  kg/m
• density in smaller scale is measured in

  g/cm
• what pieces of equipment do we use to measure mass in density

  scales or balance
• how do we find the density of a regular object

  measure the mass using a scales or balance.

  measure the length, width and height using a ruler.

  multiply them to get the volume.

  use the equation density = mass divided by volume.
• how do we find the density of an irregular object?

  Measure the mass using a scales or balance.

  Fill the displacement can with with water up to the spout.

  Insert the irregular object.

  Collect the displaced water using a measuring cylinder.

  Use the equation density = mass divided by volume.
• measure the volume using an

  eureka can
• measure the volume using a what

  measuring cylinder
• all objects have what type of energy

  internal
• as temperature increases , what increases

  internal energy
• specific latent heat is the energy required to

  change the state of a substance without a change in temperature
• specific latent heat is also energy used to change the internal 


  energy store of a the substance
• Lv is specific heat latent heat of

  vaporization
• Lf is specific latent heat of

  fusion
• energy change =

  mass multiplied by specific latent heat change
• state the properties of the matter

  particles are fixed.

  high density.

  low kinetic energy.

  particles are rigid.

  does not flow.

  vibrate about in a fixed positions.

  
• state the properties of the matter


  fits container.

  fixed volume.

  higher density than a gas.

  particles have higher kinetic energy than a solid.

  
• state the properties of the matter


  fills a container.

  flows.

  volume can be changed.

  low density.

  amounts of kinetic energy.

  
• when a solid is heated it gains

  more energy
• gas has the highest amounts of

  water