Study

Density

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  • Of the following densities, which one will sink to the bottom? 1, 1.25, 0.9, 0.81
    1.25
  • If a can of diet cola floats in water, what is its specific gravity?
    less than 1
  • What 2 measurements do you need to find the density of a brick?
    mass and volume
  • What is the mass of an object if the density is 2 g/ml and the volume is 20 mL?
    40 g
  • What does specific gravity compare the density of a substance to?
    water
  • What factor affects the density of an egg that is placed in a glass of salt water and it floats but in fresh water it sinks?
    adding a substance
  • What is the mass of a substance compared to the mass of equal volume of water?
    specific gravity
  • What is the specific gravity of pure water?
    1 g/cm3
  • What is the density of an object if the mass is 40 g and the volume is 20 mL?
    2 g/mL
  • How are the particles in a solid packed compared to particles in a liquid?
    more tightly packed
  • What is the volume of an object if the density is 5 g/mL and the mass is 25 g?
    5 mL
  • What is the formula for finding the density of an object?
    d=m/v
  • Why do helium balloons rise?
    helium is less dense than air around it
  • If an object has a density of 0.2 g/cm3, what does it do when placed in a liquid that has a density of 0,84 g/cm3?
    it floats
  • What happens to solid water when it is placed in liquid water?
    floats to top, less dense
  • What could you say about the density of a ball that is in a container with 3 liquids of different densities where the ball floats in the 2nd layer?
    density of ball is equal to 2nd layer
  • What happens to substances that are less dense than water?
    they float