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Ch2-Chem
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7
Chemistry
Undergraduate 1
08/27/2008
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Term
significant figures
 Definition
non-place holding digits in a reported measurement
Term
all non zero digits are...
 Definition
significant
Term
interior zeros are...
 Definition
significant
Term
trailing zeros are..
 Definition
significant
Term
leading zeros are..
 Definition
not significant
Term
zeros at the end of a number but before a decimal point are..
 Definition
ambiguous and should be avoided with sci not (with 3.5 as 2 sig figs or 3.50 as 3)
Term
exact numbers
 Definition
exact numbers have an unlimited amount of sig figs. these are countable numbers, defined quantities (1m=100cm), numbers that are part of an equation
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