1 / 10

SIGNIFICANT FIGURES

SIGNIFICANT FIGURES. What are SIG FIG’S. Digits that carry meaning contributing to its precision. They help make our “precision” more accurate Precision-the degree to which repeated measurements under unchanged conditions show the same results. HOW DO WE KNOW?. 5 Simple Rules. Rule #1.

lynda
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. What are SIG FIG’S • Digits that carry meaning contributing to its precision. • They help make our “precision” more accurate • Precision-the degree to which repeated measurements under unchanged conditions show the same results.

  3. HOW DO WE KNOW? 5 Simple Rules

  4. Rule #1 • All non-zeroes are significant • Ex: 123 has 3 sig figs 4789 has 4 sig figs 2 has 1 sig fig

  5. RULE # 2 • All zeroes between non-zeroes are significant. • Examples: 70002 (5 sig figs) 7000200 (5 sig figs) 205 (3 sig figs)

  6. RULE # 3 • All zeroes to the left of a decimal AND to the right of a non-zero are significant. Example: 7000200. (7 sig figs) 7000200 ( 5 sig figs) 120. (3 sig figs) 120 (2 sig figs)

  7. RULE # 4 • All zeroes to the RIGHT of a decimal point AND to the right of a non-zero are significant. Examples: 7000200.0 (8 sig figs) 702.05 (5 sig figs)

  8. Rule 5 All zeroes to the left of a non-zero are not significant. Examples: 0.00000072 ( 2 sig figs) 10.00000072 ( 10 sig figs)

  9. CONFUSED? • Try the following problems for practice in your notes. Tell me how many sig figs there are and which rule or rules supports your answer.

  10. PRACTICE PROBLEMS A.) 6.571 B.) 0.157 C.) 28.0 D.) 30.07 E.) 0.106 F.) 0.0067 G.) 26.509

More Related