Scientific Notation

• scientific notation - either less than 10 or more than 1
• accepted or not

  • 0.1805 x 10^8 = x
  • 18.05 x 10^6 = x
  • 1.805 x 10^7 = /
• significant or not? (trailing zeros)

  25.330 = significant, 5 SF
• significant or not? (captive zeros)

  1001 = significant, 4 SF
• significant or not? (leading zeros before decimal point)

  00.15 = not significant, 2 SF
• significant or not? (leading zeros after decimal point)

  0.0015 = not significant, 2 SF
• significant or not? (captive zeros in decimal)

  1.008 = significant, 4 SF
• significant or not? (final zeros)

  • units countable (amount of units) = significant
  • units measurable (distance) = not significant
• addition/subtraction = lowest decimal point

  • 142.52 g + 2.901 g + 23.5 g = 168.9 g
• multiplication/division = lowest SF

  • (10.2 g) (52.7 g) = 538 g or 5.38 x 10^2 g