Chapter 10 Density.

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Presentation transcript:

Chapter 10 Density

Density Density: how much mass is in a given volume of material

Density - solids, liquids, and gases all have density - density is a property of material independent of quantity or shape

Density of Common Materials Liquids tend to be less dense than solids of the same material. Water is an exception to this rule: The density of solid water (ice) is less than the density of liquid water.

Why is density different? Density changes for different substances because: 1. Atoms have different masses. 2. Atoms may be “packed” tightly or loosely.

Calculating Density Mass (g) Density (g/mL or g/cm3) Volume (mL or cm3) Units of density: - liquids: g/mL - solids: g/cm3 or kg/m3

Density Example Liquid wax has a volume of 1,700 mL and a mass of 1.5 kg. What is the density of the candle in g/mL?

Density Practice SHOW WORK!!! Find the density of an object if its mass is 143 g and its volume is 13.8 mL. Calculate the mass of matter with a density of 1.2 g/cm3 and volume of 76 cm3. If the density of a substance is 2.30 g/cm3 and its mass equals 234 g, what is its volume?