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Margaret buys a gold coin form the Franklin Mint that is certified to weigh 15.6 g. When she puts it on a balance in the lab, it displays 14.1g. What is the percent error in Margaret’s measurement?

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Round the following numbers to the number of significant figures indicated in parentheses. 0.002876 (2)=0.0029 598 (2)=6.0x10 2 102670 (3)=103000 6.75 x 10 -3 (1)=7x10 -3

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Divide the following numbers and report your answers to the correct number of significant figures in scientific notation. a. (4.0x10 -6 )/(8.0x10 -3 ) = 0.5x10 -3 5.0x10 -4 b. 15.0/3.0 = 5.0

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Subtract the following numbers and report your answers to the correct number of sig figs: a.1825-70 = 1755 1860 b. 5.0x10 6 -2x10 5 = 4.8 x 10 6 5x10 6

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Add the following numbers and report the answers to the correct number of sig figs. 19060 + 285=19345 19350 1.2x10 8 + 5.4x10 7 =1.74x10 8 1.7 x 10 8

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Match the measurements with the correct SI unit: 1. Length F 2. Mass B 3. Temperature H 4. Time D A. Liter F. Meter B. Kilogram G. Cubic Centimeter C. Celcius H. Kelvin D. Second I. Millisecond E. Kilometer J. Gram

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Convert 3820dg to ounces using the following conversion factors and the factor label method of analysis. 2.2lbs=1kg, 1000g=1kg, 10dg=1g, 16oz=1lb ****Remember Sig Figs****

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How many significant digits are in the following numbers? 10200040 7 0.00654040 6 125.0000 7 1330.0650 8 0.010001 5

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What is the value of 34 o C in Kelvin? K=C+273 K=34+273=307K

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Multiply the following numbers and report the answers in scientific notation to the correct number of sig figs. (4.2x10 6 )(3x10 -3 ) = 12.6 x 10 9 1.26 x 10 10 81 x 9.00= 729 730

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What happens to the density of an object when volume decreases? (such as what happens to a balloon on a cold day) Density Increases

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Write the following numbers in correct scientific notation form. 0.006420 6.420x10 -3 3050728 3.050728x 10 6 101.28 x 10 2 1.0128x10 4

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Determine the density of this object and report your answer to the correct number of sig figs. 4.6g 50 60

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Calculate the volume of this object in cm 3 and then convert to mm 3 (report your answers to the correct number of sig figs) I don’t remember the exact measurements, but…. V= L x W x H so… 78.7cm 3

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Rewrite the following equation to solve for mass and then for volume. (2 equations)

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Which of the following are derived measurements? a. Mass d. Time b. Length e. Temperature c. Volume f. Density

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Match the equivalent values: 1. 1 kg a. 0.1 kg 2. 1 dag b. 10000mg 3. 1 hg c. 0.0001 dag 4. 1 mg d. 10 hg

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Do the following multidimensional conversion using the factor label method. Convert 0.63lbs/qt→cg/mL (2.2lbs=1kg, 1.1qt=1L) ****Remember Sig Figs****

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How would you describe this archer’s skill in terms of accuracy and precision? Precise, but not accurate

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3.1 Measurements and Their Uncertainty

3.1 Measurements and Their Uncertainty

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