Density Chapter 2.

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Presentation transcript:

Density Chapter 2

Density Density is a physical property Less Dense More Dense

Density Density is the ratio of mass to volume, or mass divided by volume. The derived SI unit is kilograms per cubic meter, kg/m3 g/cm3 or g/mL are also used Density = mass volume

Density Pyramid Density Mass Volume

Practice Problems A sample of aluminum metal has a mass of 8.4g. The volume of the sample is 3.1cm3. Calculate the density of aluminum. Density mass volume

Answer #1 mass 8.4 g Given: mass(m) = 8.4g volume(V)= 3.1cm3 Unknown: Density (D) Density = mass volume 8.4 g 3.1 cm3 = = 2.71 g/cm3

Practice Problems 2. A diamond has a density of 3.26 g/cm3. What is the mass of a diamond that has a volume of 0.351 cm3 Density mass volume

Answer #2 Given: Density (D) = 3.26 g/cm3 volume(V)= 0.351cm3 Unknown: Mass(m) Mass (m) = (Density)(Volume)= (3.26 g/cm3)(0.351cm3) = 1.14 g

Practice Problems 3. What is the volume of a sample of liquid mercury that has a mass of 76.2g, given that the density of mercury is 13.6g/mL. Density mass volume

Answer #3 mass 76.2 g Given: Mass(m) = 76.2g Density(D)= 13.6 g/mL Unknown: Volume(V) Volume = mass Density 76.2 g 13.6g/mL = = 5.60 mL