chatper 5 wight, density and SG

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5 Terms

1
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the definition of density

the weight of a materiel relative to its volume

2
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density depends on what ?

composition

structure

How heavy they are and how closely packed together

3
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how do you measure density

to compare density of water (1cc/1gr) with the density of a material

4
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what is SG

specific gravity

is the ratio of the weight of a substance to the weight of an equal volume of water

5
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how can you calculate SG

dividing the weight of a material by the equal volume of water

SG = a:a-w

a= weight in air

w = weight in water