Calculating Density Density

							Density
     General Rules about Density
1.   In general, solids are most dense, then liquids,
     gases are least dense. Water is an exception
     to this rule
2.   Densities of solids and liquids are measured at
     a certain temperature. Densities of gasses are
     measured at a certain pressure.
3.   Density is a physical, quantitative characteristic
     of a substance (see Appendix D). Ex. At 20 oC,
     zinc has a density of 7150 kg/m3.
        Calculating Density
  Density = mass
             volume
Examples
1. A sample of iron has a mass of 100 kg
   and displaces a volume of 0.0126 m3.
   Determine the density
2.   A density of a certain grade of petroleum
     is 0.750 g/mL. What volume would be
     occupied by 150 g of liquid?




Now do density problem set
           Interpreting Graphs
   Graphs are a great way of viewing a lot of
    information at once. They show
    generalities and trends but they also show
    specific information or data.
   Practice obtaining the density of a
    substance from a line of best fit. Slope =
    denisty. m= rise m= y2-y1
                   run       x2-x1