Density

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Density
Chapter 5
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1.) What is more dense a bagel or a piece of
bread?
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Answer
2.) Why?
Answer More bread (mass) in the same amount of
space (volume).
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Density-

• Definition-
• how much mass is squeezed into a given space.
• the amount of matter per unit volume

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Equation

• mass
• Density volume

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Units-

• units for mass are grams or kilograms
• units for volume are either cubic cm (cm3) or
  cubic meters (m3)
• 1 cm3 1mL
• Example
• Water has a density 1 gram per cubic cm or
  1 g/cm3

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2.) Which has greater density?

•            1 kg of water or
• 10 kg of water

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Answer

• They are the same. Density is a consistent
  attribute of materials.
• It does not matter how much of a material is
  present, the density will always be the same when
  we are talking about the same material.

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3.) What is the density of a block that has a
mass of 32 g and has a volume of 256 cm3

• Equation d m/v
• d 32 / 256
• d .125

g/cm3
4.) What are the units?
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5.) What is the mass of block that has a density
of .125 g/cm3 and has a volume of 256 cm3

• Equation d m/v
• .125 m / 256
• m 32

g
6.) What are the units?
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7.) What is the volume of a block that has a mass
of 32g and has a density of .125 g/cm3

• Equation d m/v
• .125 32 / v
• v 256

cm3
8.) What are the units?