Scientific Notation

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Author:
Mon
ID:
66646
Filename:
Scientific Notation
Updated:
2011-02-16 01:44:08
Tags:
scientific notation chemistry
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Description:
Chemistry Scientific notation
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  1. What is Scientific Notation and how is it used?
    Scientific notation is used to write very large or very small numbers.

    Example: of a large number such as 4 5000 000 s, it is written in scientific notation as 4.5 x 106 s.
  2. A number written in scientific notation contains what?
    A coefficient and a power of 10
  3. What is coefficient?
    The first part that is usually between 1 and 9.99 and the second part, which is power of 10 that can be anything.

    • examples...
    • * 454000 = 4.54 x 105 moving the decimal 5 places to the left
    • * 0165 = 1.65 x 10-2 moving the decimal 2 places to the right.
  4. Using the example 1.5 x 102, what number is coefficient and what number is the power of ten?
    • 1.5 = coefficient
    • 102 = power of 10
  5. What is the scientific notation of the diameter of the Eearth 12 8000 000 m?
    1.28 x 107 m
  6. What is the scientific notation of the mass of a typical human 68 kg?
    6.8 x 101 kg
  7. What is the scientific notation for the length of a pox virus 0.000 03?
    3 x 10-5 cm
  8. In a number 10 or larger, the decimal point is moved where?
    to the left to give a positive power of 10
  9. In a number less than 1, the decimal point is moved where?
    to the right to give a negative power of 10
  10. Select the correct scientific notation for 0.000 0008 m
    1) 8 x 106 m
    2) 8 x 10-6 m
    3) 0.8 x 10-5 m
    The correct answer is 2) 8 x 106 m
  11. Select the correct scientific notation for 72 000 g
    1) 7.2 x 104 g
    2) 72 x 103 g
    3) 7.2 x 10-4 g
    The correct answer is 1) 8.2 x 104 g
  12. Write this as a standard number
    2.0 x 10-2 L
    The correct answer is 0.020 L
  13. Write this as a standard number
    1.8 x 105 g
    180 000 g

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