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Unit Review: vocab

Precision Description of how close a set of measurements are to one another.
accuracy Description of how close a single measurement is to the accepted value (the truth).
absolute zero A "temperature" of 0 K. No sample of matter has been measured at this temp. yet
significant figures a systematic way to communicate the level of ceertainty in a measurement. "how certain"
measurement a quantity that has both a number and a unit.
weight a measurement of the effect of the gravitational force on an object.
mass the (amount of matter) present in an object or sample, often measured in grams.
international systems of units si
error =experimental value-accepted value
percent error a way to tell how a measurement error relates to the size/ scale of what is being measured.
scientific notation a coefficient multiplied by an integer power of 10.
temperature a measure of how hot or cold an object is.
conversion factor a ratio of equal measurements, each having a different unit, based on a fact- used to convert from one unit to another unit.
density the ratio of the mass of an object to its volume.
dimensional analysis a systematic way to convert the units on a measurement from one unit to another.
Created by: kaitlinschmitt



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