Density of Solids and Liquids

Key Question:How can you find the density

of a solid or liquid?

Properties of a Solid

• Density –ratio of mass to volume in a homogeneous mixture or substance

–gives information about the “compactness” of a material

–Formula: D= m/V

Does density depend on the size or shape of the material?

• Yes• Does density depend on the type of

the material?• Yes • How can density be used to identify a

material? • Use a Density Chart or compare to a

substance with a known density

What are some other properties of solids?

Other Properties of Solids

• Hardness –measure of a substance’s resistance to scratching

• Elasticity–measure of a solid’s ability to return to its original size when stretched

Other Properties of Solids

• Brittleness–measures how easily a material will shatter

• Malleability –measures a solid’s ability to be pounded into thin sheets

Other Properties Solids

• Tensile strength –Measure of how much pulling a material can withstand

How can you find the density of a solid?

• D = m/V

• What is the density of a rock that has a mass of 300 kg and a volume of 500 cm3

• 300kg / 500 cm3 =0.6 kg / cm3

How can you find the density of a liquid?

• Use the same formula:

• If a fish tank holds 50L of water and the density of the water is 1g/mL what is the mass of the water in the fish tank?

• 50L = 50,000 mL • 50,000 mL x 1 g/mL =

m = VD

50,000g

D = m/V

The End