1 / 16

Significant Figures

Significant Figures. Significant Figures. All measurements are inaccurate Precision of measuring device Human error Faulty technique. Significant Figures. Measurements need to convey precision Must include degree of uncertainty Sig Figs tell us. Significant Figures. Significant Figures.

tanner-sanford
Download Presentation

Significant Figures

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Significant Figures

  2. Significant Figures • All measurements are inaccurate • Precision of measuring device • Human error • Faulty technique

  3. Significant Figures • Measurements need to convey precision • Must include degree of uncertainty • Sig Figs tell us

  4. Significant Figures

  5. Significant Figures • Significant figures in a measurement include • all of the digits that are known precisely • plus one last digit that is estimated.

  6. Significant Figures 2. Non-zero digits are always significant. 103.230002

  7. Significant Figures 3. All final zeros after the decimal point are significant. 12.740 0.0420

  8. Significant Figures 4. Zeros between two other significant digits are always significant. 10.0 2004 6.000

  9. Significant Figures 5. Zeros used only for spacing the decimal point are not significant. 100 0.00000233

  10. Always put a 0 in front of a decimal point • 0.247  • 0.0042  • .873 

  11. Significant Figures

  12. Significant Figures

  13. Significant Figures 6. If you add or subtract, the answer is rounded to the same number of decimal places as the measurement with the least number of decimal places.

  14. Significant Figures 7. If you multiply or divide two numbers, the answer is rounded off to the number of significant figures in the least precise term used in the calculation (i.e. the number with the fewest sig figs).

  15. Calculations

  16. Calculations

More Related