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What 2 measurements do you need to find the density of a brick?
mass and volume
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
If a can of diet cola floats in water, what is its specific gravity?
less than 1
What happens to solid water when it is placed in liquid water?
floats to top, less dense
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 is the specific gravity of pure water?
1 g/cm3
What is the formula for finding the density of an object?
d=m/v
What is the density of an object if the mass is 40 g and the volume is 20 mL?
2 g/mL
What is the mass of an object if the density is 2 g/ml and the volume is 20 mL?
40 g
What is the volume of an object if the density is 5 g/mL and the mass is 25 g?
5 mL
What does specific gravity compare the density of a substance to?
water
Of the following densities, which one will sink to the bottom? 1, 1.25, 0.9, 0.81
1.25
How are the particles in a solid packed compared to particles in a liquid?
more tightly packed
What is the mass of a substance compared to the mass of equal volume of water?
specific gravity
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
