Chemistry- Significant Figures: Why Bother?2014-2015



Name: ______________________________________________________________ hour: _________ date: ______Chemistry- Significant Figures: Why Bother?2014-2015Key in the URL : ; Read the tutorial on the website and answer the questions below. What does the number of digits in a measurement imply? _____________________________________________________________________________________________On a centimeter ruler, what marks are read with certainty and where does the uncertainty lie? _____________________________________________________________________________________________Why, in mathematical operations do we have to round our answers to in a particular way? BE SURE TO READ THE EXAMPLE!!!!! _____________________________________________________________________________________________Chemists use the term ‘significant figures’ to refer to what? __________________________________________________________________________________________________________________________________________________________________________________________SO, if a chemist was to read someone else’s work, they would assume: __________________________________________________________________________________________________________________________________________________________________________________________ Key in the URL : Read and fill in the chart below with the information about significant figures.What IS significantExampleWhat is NOT significantExampleDetermine the number of significant digits in each of the following measurements:1. 23.30 cm________5. 1,843.02 L________8. 2.00012 km________11. 0.0001010450 sec________2. 3.65 cg________5. 8.701oC________9. 0.5 mL________12. 456.78 mg________3. 4.00 x 103 kg________6. 200 mm________10. 704,000 sec________13. 4.00 g________4. 54 km________7. 0.041 cg________ 11. 65000 mm________ 14. 0.00010 km________ ................
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