particle model of matter

• what happened if you increase the temperature of gases?


  transfer energy into the kinetic energy stores

  speed of particles increase

  increases pressure
• formula for density?


  mass/volume
• what is density?


  measure of how compact a substance is
• how do you find the density of a regular solid?

  1. measure the mass of the object
  2. measure its length, width and height and calculate the volume
  3. do density=mass/volume
• how do you find the density of a irregular solid?


  1. measure the mass of the object
  2. submerge it in a eureka can filled with water
  3. the volume of the water displaced is the volume of the object
  4. do density = mass/volume
• how do you find the density of a liquid?


  1. place a measuring cylinder on a balance and zero the balance
  2. pour 10ml of the liquid into the measuring cylinder and record the mass
  3. pour another 10ml and repeat the process until the cylinder is full and recording the total volume and mad each time
  4. for each measurement use density = mass/volume (1ml =1cm2)
  5. take an average and that’s the density