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16 Cards in this Set
- Front
- Back
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What determines the significant figures in a measurement?
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The accuracy of a measurement.
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When counting significant figures, all nonzero integers are significant or not significant?
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significant
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When counting significant figures, leading zeros are significant or not significant?
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not significant
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When counting significant figures, trapped zeros are significant or not significant?
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significant
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When counting significant figures, trailing zeros after the decimal are significant or not significant?
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significant
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When counting significant figures, trailing zeros before the decimal with no nonzero integer after the decimal are significant or not significant?
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not significant
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When counting significant figures, trailing zeros with zero after the decimal are significant or not significant?
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significant (they are trapped zeros)
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When counting objects (e.g. 1 apple, 62 beetles, 1 atom, etc.), how many significant figures are they considered to have?
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infinite
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When adding and/or subtracting, how are the significant figures in the final answer determined?
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by the decimal places of the values being added
1)Add all numbers as they exist. 2) The number with the fewest digits after the decimal determines the digits after the decimal in the answer. |
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When multiplying and/or dividing, how are the significant figures in the final answer determined?
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The significant figures in the final answer are determined by the number of significant figures in each value being multiplied/divided.
1) Add all numbers as they exist. 2) The number with the fewest significant figures determines the number of significant figures in the answer. |
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When confronting combined operations, what is the order of operations?
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1) Do all math inside the PARENTHESES.
2) Do all MULTIPLICATION/DIVISION. 3) Do all ADDITION/SUBTRACTION. 4)Apply significant figure rules for each grouping. |
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What does density measure?
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Mass per unit of volume of a substance.
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Density = ?/?
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Mass/Volume
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When graphing density, ?=?*?+?
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Mass=Density*Volume+0
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When graphing, mass goes on the _____ axis, and volume goes on the _____ axis.
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mass = y axis
volume = x axis |
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How is the slope of a line determined?
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The slope = Δy/Δx (then use significant figure rules to round)
NOTE: Δ means "change in" |
