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Chapter 3.4. Density The ratio between the object’s mass and its volume. SI Units. Symbol. Base Unit. Abbrev. Quantity. Length. l. meter. m. Mass. m. kilogram. kg. Volume. v. cm 3. cubic centimeter. Temp. T. kelvin. K. Density. Density =
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Chapter 3.4 Density The ratio between the object’s mass and its volume.
SI Units Symbol Base Unit Abbrev. Quantity Length l meter m Mass m kilogram kg Volume v cm3 cubic centimeter Temp T kelvin K
Density • Density = • Density is a characteristic (physical) property that depends only on the composition of a substance, not on the size of the sample. • The composition of a mixture can vary therefore the density can vary. Mass Volume M V D =
Density Mass (g) Volume (cm3)
Sample Problem 3-5 A copper penny has a mass of 3.1g and a volume of 0.35 cm3. What is the density of copper? Density = mass volume Density = 3.1g 0.35 cm3 = 8.8571 g/cm3 = 8.9 g/cm3