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Definition: Measurement with Sig Figs:. Digits in a measurement that have meaning relative to the equipment being used. Digits that can be known precisely plus a last digit that must be estimated. Depends on the equipment being used to measure. Significant Figures. - PowerPoint PPT Presentation
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Significant Figures
Definition:
Measurement with Sig Figs:
Digits in a measurement that have meaning relative to the equipment being used.
Digits that can be known precisely plus a last digit that must be estimated.
Depends on the equipment being used to measure.
Significant Figures
Pacific to Atlantic Rule Decimal Present Start from Pacific, every
digit beginning w/ first non-zero digit is significant
How many sig figs? 20.0g 0.000568cl 1000. cm
Significant Figures
Atlantic to Pacific Rule Decimal Absent Start from Atlantic,
every digit beginning with a nonzero digit is significant.
How many sig figs?100020g1000g13250g
Measurement Notes – Sig FigsCalculations using
Sig FigsAddition/Subtraction
Example:
Multiplication/Division
Example
Limit and round to the least precise place
123.25mL + 46.0mL +86.257mL =
Limit and round to the least # of significant figures.
23.0cm x 432cm x19cm =
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