1 / 9

Significant Figures and Measuring Devices

Significant Figures and Measuring Devices. CHM 101. Sinex. Two identical length rulers with different calibrations. 1 meter. What is the length?. What is the width?. Significant Figures (SF) – Every digit you are sure of plus one place estimated. Calculate the area of the box (LxW).

alan-bradley
Télécharger la présentation

Significant Figures and Measuring Devices

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 andMeasuring Devices CHM 101 Sinex

  2. Two identical length rulers with different calibrations. 1 meter

  3. What is the length? What is the width? Significant Figures (SF) – Every digit you are sure of plus one place estimated

  4. Calculate the area of the box (LxW). When multiplying/dividing: fewest number of SF’s rules 0.9 x 0.4 = 0.36 = 0.4 m2 Calculate the perimeter of the box (2L+2W). When adding/subtracting: least number of decimal places rules 0.9 + 0.9 + 0.4 + 0.4 = 2.6 m How would you improve your results?

  5. What is the length? What is the width?

  6. Calculate the area of the box (LxW). 0.9 x 0.42 = 0.38 = 0.4 m2 Calculate the perimeter of the box (2L+2W). 0.9 + 0.9 + 0.42 + 0.42 = 2.6 m How would you improve your results?

  7. What is the length? What is the width?

  8. Calculate the area of the box (LxW). 0.88 x 0.42 = 0.37 m2 Calculate the perimeter of the box (2L+2W). 0.88 + 0.88 + .42 +.42 = 2.60 m How would you improve your results? Need a ruler calibrated to 0.01 m

  9. For any measuring device you can read it to one place better than it is calibrated. Thermometer - Calibrated to every 1 degree Read to every 0.1 degree Buret - Calibrated to every 0.1 mL Read to every 0.01 mL

More Related