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the method by which we can convert the representation of a quantity from one unit (or set of units) to another
equality written as a ratio is called a...
the method by witch we can change the units of measure without changing the amount...
one liter is approximately equal to ...
you can use the __ of a material to convert between mass and volume.
is pewter a compound?
no, it's a homogenous alloy
is brass a pure substance?
No! Its is an alloy. Copper and zink