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Understanding Density: A Fundamental Physical Property

Learn about density, the ratio of an object's mass to its volume. Discover how it is calculated, its significance in identifying substances, and its application in everyday scenarios.

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Understanding Density: A Fundamental Physical Property

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  1. Chapter 3.4 Density The ratio between the object’s mass and its volume.

  2. SI Units Symbol Base Unit Abbrev. Quantity Length l meter m Mass m kilogram kg Volume v cm3 cubic centimeter Temp T kelvin K

  3. 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 =

  4. Density Mass (g) Volume (cm3)

  5. 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

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