2.2 Significant Figures.doc - Significant Figures Scientific Notation Name Date Block Rules for Determining Significant Figures Involving Zeros Examples

# 2.2 Significant Figures.doc - Significant Figures...

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Significant Figures & Scientific Notation Name: ______________________ Date: _________ Block: _______ Rules for Determining Significant Figures Involving Zeros Rule Examples of Measurement s Number of Significant Figures 1. All nonzero digits are significant 2. All zeros between two nonzero digits are significant 3. Zeros to the right of a nonzero digit, but no decimal point are not significant. If such zeros are next to a decimal point, they are significant. 4. In numbers less than one, zeros to the right of a decimal point that are to the left of the first nonzero digit are never significant. They are simply placeholders. 5. In numbers less than one, the zero to the left of the decimal point is never significant. It is there to make sure the decimal point is not overlooked. 6. All zeros to the right of a decimal point and to the right of a nonzero digit are significant. 438 g 26.42 m 1.7 cm 506 dm 10,050 mL 900.43 kg 4830 km 60 g 4830. L 60. K 0.06 g 0.0047 L 0.005 o C 0.8 g 8.0 dm 16.40 g 35.000 L 1.60 s 3 4 2 3 4 5 3 1 4 2 1 2 1 1 2 4 5 3 Practice : Determine the number of significant figures (SF) in the following numbers.  • • • 