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Density Notes cw 10/13 - 10/14 October 14, 2016 Density
Density Notes
cw 10/13 - 10/14
October 14, 2016
Density
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October 14, 2016
Density is the mass per unit of volume of a substance
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To find density, you must find the amount of matter (mass) that is present in each unit of volume
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Density can be calculated using a formula
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D = m___v
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Density is measured in units of...
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Density is a ratio of mass to volume.
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Ratios are a comparison of two different things and can be written as a fraction.
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To solve for density, simplify the fraction and divide to change it to a decimal.
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Every substance has its own density
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Example: Copper has a density of 8.96 g/cm3
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Everything made of only copper will have a density of 8.96 g/cm3
copper cube (#1)
m =
v =
copper cylinder (#10)
m =
v =
copper metal thingy (#12)
m =
v =
Density Notes
cw 10/13 - 10/14
October 14, 2016
Sink or Float
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If an object has a density greater than the density of water, it ______ .
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If an object has a density less than the density of water, it ______ .
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Changing Density
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3 ways to determine if something has more density
> same size (volume), more mass
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cw 10/13 - 10/14
October 14, 2016
3 ways to determine if something has more density
> same size (volume), more mass> same mass, less volume
(squish it to make it smaller)
Density Notes
cw 10/13 - 10/14
October 14, 2016
3 ways to determine if something has more density
> same size (volume), more mass> same mass, less volume
(squish it to make it smaller)> more mass and less volume
Density Notes
cw 10/13 - 10/14
October 14, 2016
3 ways to determine if something has less density
> same size (volume), less mass
Density Notes
cw 10/13 - 10/14
October 14, 2016
3 ways to determine if something has less density
> same size (volume), less mass> same mass, more volume
(stretch it to make it bigger)
Density Notes
cw 10/13 - 10/14
October 14, 2016
3 ways to determine if something has less density
> same size (volume), less mass> same mass, more volume
(stretch it to make it bigger)> less mass and more volume
Density Notes
cw 10/13 - 10/14
October 14, 2016
https://phet.colorado.edu/sims/density-and-buoyancy/density_en.html
