1. DENSITY A PHYSICAL INTENSIVE PROPERTY

2. DENSITY Density is the mass of a substance that occupies a given volume. The SI standard unit of volume is the cubic meter (m 3 ), it is more practical to express the density of solids and liquids in g/cm 3. Since gases are less dense than solids or liquids their densities are usually given in g/dm 3.

3. Units for Density The units used to express density are derived units. Mass is a physical extensive property expressed in grams. Volume is a physical extensive property expressed in cubic centimeters. Density is a physical intensive property.

4. The Equation for Density d = m/V Given: mass and volume Find: density Factor: d = m/V (and any other factors as needed for unit conversion)

5. Type 1 What is the density of a hydrochloric acid solution that has a mass of 17.84 g and occupies a volume of 15.00 cm 3 ? Given: m = 17.84 g V = 15.00 cm 3 Find: density Factor: d = m/V

6. Density as a Conversion Factor Density can also be used as a conversion factor between mass and volume. If the density of a substance is 8.92 g/cm 3 then the volume of 1cm 3 is known: 1cm 3 = 8.92 g

7. Type II Given: mass Find: Volume Factor: density written as a factor: 1cm 3 = __________ g ( and other factors needed for unit conversions )

8. Type III Given: volume Find: mass Factor: density written as a factor: 1 cm3 = ________ g (and any other factors needed for unit conversions)