1 / 6

Significant Figures Rules:

Significant Figures Rules:. All non-zero digits DO count. 24 = 2 3.56 = 3 Leading zeros DON’T count. (zeros in front of numbers) 0.0025 = 2 Captive Zeros DO count. (zeros between non-zero numbers) 1502 = 4 1.008 = 4

oke
Download Presentation

Significant Figures Rules:

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 Rules: • All non-zero digits DO count. • 24 = 2 • 3.56 = 3 • Leading zeros DON’T count. • (zeros in front of numbers) • 0.0025 = 2 • Captive Zeros DO count. • (zeros between non-zero numbers) • 1502 = 4 1.008 = 4 • Trailing Zeros DO count IF the number contains a DECIMAL. • (zeros at the end of numbers) • 100 = 1 2306.0 = 5 1.00 x 103 = 3

  2. Pacific/Atlantic Method A P If a decimal point is present, start on the Pacific (P) side and draw an arrow through the number until you hit a non-zero digit. Count all numbers without an arrow through them. Ex: P 123.003 g Answer = 6 If a decimal is absent, start on the Atlantic (A) side and draw an arrow through the number until you hit a non-zero digit. Ex: 10,100 cm A Answer = 3

  3. Try These! • 4.012 • 87,900 • 91.0005 • 500,001 • 0.005 • 0.6010 • 7,040, 100 • 2.100 • = 4 sig. figs. • = 3 sig. figs. • = 6 sig. figs. • = 6 sig. figs. • = 1 sig. figs. • = 4 sig. figs. • = 5 sig. figs. • = 4 sig. figs.

  4. Adding/Subtracting Numbers Using Sig Figs • Answer should contain the same number of sig figs as the number with the least sig figs in the problem: • 12.11 + 18.0 = 30.11 • 12.11 = 4 • 18.0 = 3 • 12.11 + 18.0 = 30.1

  5. Multiplying/ Dividing Numbers Using Sig Figs • Answer should contain the same number of sig figs as the number with the least sig figs in the problem: • 4.56 x 1.4 = 6.38 • 4.56 = 3 • 1.4 = 2 • 4.56 x 1.4 = 6.4

  6. Try These! • 4.01 + 0.03 • 87.9 – 85.1 • 4.13 x 1.2 • 500 / 5.5 • = 4.04 = 4 • = 2.8 = 2.80 • = 4.956 = 5.0 • = 90.90909 = 90

More Related