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?

|15.6−14.1|15.6

×100=9.6%

Round the following numbers to the number of significant figures indicated in parentheses. 0.002876 (2)= 0.0029 598 (2)= 6.0x102

102670 (3)= 103000 6.75 x 10-3 (1)= 7x10-3

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

Subtract the following numbers and report your answers to the correct number of sig figs:

a. 1825-70 = 1755 1860b. 5.0x106-2x105= 4.8 x 106 5x106

Add the following numbers and report the answers to the correct number of sig figs. 19060 + 285=19345 19350 1.2x108 + 5.4x107=1.74x108 1.7 x 108

Match the measurements with the correct SI unit: 1. Length F 2. Mass B 3. Temperature H 4. Time D A. Liter F. MeterB. Kilogram G. Cubic CentimeterC. Celcius H. KelvinD. Second I. MillisecondE. Kilometer J. Gram

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****

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

What is the density of the following substance?

change in y over the change in x = = 0.71g/ml Is the following substance: a. Rubidium=1.532g/ml b. Potassium = 0.71g/ml c. Beryllium=1.85g/ml

What is the value of 34oC in Kelvin?

K=C+273

K=34+273=307K

Multiply the following numbers and report the answers in scientific notation to the correct number of sig figs.

(4.2x106)(3x10-3) = 12.6 x 109 1.26 x 1010

81 x 9.00= 729 730

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

Density Increases

Write the following numbers in correct scientific notation form. 0.006420 6.420x10-3

3050728 3.050728x 106

101.28 x 102 1.0128x104

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

4.6g50

60

Calculate the volume of this object in cm3 and then convert to mm3

(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…

6.42𝑐𝑚×2.85𝑐𝑚×4.30𝑐𝑚=78.6771𝑐𝑚3 78.7cm3

=78700mm3

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

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

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

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****

0.63𝑙𝑏𝑠𝑞𝑡 ( 1𝑘𝑔2.2𝑙𝑏𝑠 )( 1000𝑔1𝑘𝑔 )( 100𝑐𝑔1𝑔 )( 1.1𝑞𝑡1𝐿 )( 1𝐿

1000𝑚𝐿 )=31.5→32 𝑐𝑔𝑚𝐿

How would you describe this archer’s skill in terms of accuracy and precision?

Precise, but not accurate