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Scientific Notation
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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 10
^{6 }
s.
A number written in scientific notation contains what?
A coefficient and a power of 10
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 10
^{5}
moving the decimal 5 places to the left
* 0165 = 1.65 x 10
^{-2}
moving the decimal 2 places to the right.
Using the example 1.5 x 10
^{2}
, what number is coefficient and what number is the power of ten?
1.5 = coefficient
10
^{2 = }
power of 10
What is the scientific notation of the diameter of the Eearth 12 8000 000 m?
1.28 x 10
^{7}
m
What is the scientific notation of the mass of a typical human 68 kg?
6.8 x 10
^{1}
kg
What is the scientific notation for the length of a pox virus 0.000 03?
3 x 10
^{-5}
cm
In a number 10 or larger, the decimal point is moved where?
to the left to give a positive power of 10
In a number less than 1, the decimal point is moved where?
to the right to give a negative power of 10
Select the correct scientific notation for 0.000 0008 m
1) 8 x 10
^{6}
m
2) 8 x 10
^{-6}
m
3) 0.8 x 10
^{-5 }
m
The correct answer is 2) 8 x 10
^{6 }
m
Select the correct scientific notation for 72 000 g
1) 7.2 x 10
^{4}
g
2) 72 x 10
^{3}
g
3) 7.2 x 10
^{-4}
g
The correct answer is 1) 8.2 x 10
^{4}
g
Write this as a standard number
2.0 x 10
^{-2}
L
The correct answer is 0.020 L
Write this as a standard number
1.8 x 10
^{5}
g
180 000 g
Author
Mon
ID
66646
Card Set
Scientific Notation
Description
Chemistry Scientific notation
Updated
2011-02-16T06:44:08Z
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