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Name ___________________________________________________Date_________________ Pd____ Day 1 Classwork Scientific Notation, Significant figures, and Metric System Convert the following to or from Scientific Notation: 1. 3 x 103 _____________ 6. 43,200 _____________ 2. 3.2 x 10-3 _____________ 7. – 45.67 _____________ 3. 7.28 x 106 _____________ 8. 37,235,000 _____________ 4. 5 x 10-2 _____________ 9. 0.00234 _____________ 5. - 3.35 x 10-5 _____________ 10. 1.001 _____________ Significant Figures: 1. Report the following volume measurements with the correct number of digits g) Ruler A______ h)Ruler B______ CHEM099 2. Identify the following numbers as Exact or Inexact: a. A classroom contains 24 students. ____________ b. A car is traveling at a speed of 45 miles per hour. ____________ c. Your neighbor weighs 152 pounds. ____________ d. The temperature on the beach is 95F. ____________ e. Your niece is 6 years old. ____________ f. ____________ A newspaper article contains 189 words. g. A paper clip has a mas of 0.62 grams. ____________ h. Your cousin is 65 inches tall. ____________ i. The flight from New York to Los Angeles is 6 hours. ____________ j. The length of a copper rod is 6.37 meters. ____________ k. The atmospheric pressure is 760 torr. ____________ l. ____________ There are 18 apples in a bag. m. A circle has a diameter of 12.6 cm. ____________ n. A cube has a volume of 8 m3. ____________ o. There are 438 parking spaces available at RC. ____________ 3. How many significant figures does each of the following measurements contain? a. 3.405 x 105 _________________ g. 40 _________________ b. 0.00289 _________________ h. 0.02303 _________________ c. 1030 _________________ i. 607 _________________ d. 200 _________________ j. 2,567 _________________ e. 102.00 _________________ k. 25.0 _________________ f. 0.000980 _________________ l. _________________ 4. Round each of the following measurements to three significant figures: a. 342.79513mm ____________ b. 9,845.8749 μL ____________ c. 0.000045389 kg ____________ d. 2.3444444495 nL ____________ e. 65.89 mg ____________ f. ____________ 56.9971 kg 2 2.0