Describe what density means, in words.

Density is a measure of how much mass a substance has, per unit of its volume.

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What is the formula that links density (ρ\rho ), mass (m), and volume (V)?

ρ = Vm​


ρ\rho = density (kgm-3)

m = mass (kg)

V = volume (m3)

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What are the units of density?

kgm-3

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How might you experimentally calculate the density of a regularly shaped object (e.g. a cube)?

density = volumemass​


  1. Measure the object's mass using a balance.
  2. Use geometry to calculate the object's volume.
  3. Use the mass and volume to calculate the density.

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How might you experimentally calculate the density of an irregularly shaped object (e.g. a rock you found)?


  1. Measure the object's mass using a balance.
  2. Use a Eureka can to measure the object's volume.
  3. Use the mass and volume to calculate the density.

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