Chem 1 Notes

Sig Fig Rules:
- 1. Non zero numbers always count
- 2. Zeros trapped between non zeros always count.
- 3. Zeros before non zeros do not count.
- 4. Zeros after decimals always count
Sig Fig Examples

104.85 =
8.500 =
0.0006 =
500.0 =
- 104.85 = 5
- 8.500 = 4
- 0.0006 = 1
- 500.0 = 4
Sig Fig with Scientific Notation

5.000 x 10³ =
5.00 x 10³ =
5.0 x 10³ =
- 5.000 x 10³ = 4
- 5.00 x 10³ = 3
- 5.0 x 10³ = 2
Adding and Subtracting Sig Fig: always....
...round to the figure with the lowest number of digits following the decimal point.
- i.e. 1.0342193 + 2.3 = 3.3342193
- Round to 1 dp = 3.3
Multiplying and Dividing: always...
...round to the figure with the lowest number of significant figures.
- e.g. 30.3 x 0.004 = 0.1212
- Round to 1 sf = 0.1

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Anonymous

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Chem 1 Notes

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My random Chemistry Notes that may not make sense to anyone else.

Updated

2010-01-19T14:43:27Z

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