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PH ch1.3 measurement

scientific notation

way of expressing a number as the product of a number between 1 and 10 and a power of 10


straight line distance between 2 points; measured in meters


the quantity of matter in an object; base unit is kg


amount of space taken up by an object; measured in liters or cubic meters


ratio of an object's mass to its volume


a gauge of how exact a measurement is

significant figures

all known digits in a measurement plus one estimated digit


closeness of a measurement to the actual value of what is being measured


instrument that measures temperature


set of measuring units used by scientists

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