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SI Prefixes

SI Prefixes. Agenda Review elements Correct SF worksheet Dend-writes on SI Prefixes Practice. Ba. Ge. I. K. N. Be. H. Mg. Cl. O. Sr. B. Na. Al. C. Si. Ga. Ca. Sn. P. S. Li. F. Pb. Br. Significant Figures Once Again. Quick check on homework Did you complete it?

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SI Prefixes

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  1. SI Prefixes Agenda Review elements Correct SF worksheet Dend-writes on SI Prefixes Practice

  2. Ba

  3. Ge

  4. I

  5. K

  6. N

  7. Be

  8. H

  9. Mg

  10. Cl

  11. O

  12. Sr

  13. B

  14. Na

  15. Al

  16. C

  17. Si

  18. Ga

  19. Ca

  20. Sn

  21. P

  22. S

  23. Li

  24. F

  25. Pb

  26. Br

  27. Significant Figures Once Again Quick check on homework • Did you complete it? • Did you follow the directions on Section I telling the type of 0? • Did you include units on every number for sections II – V? • Did you fill in the blanks reminding you of SF rules?

  28. Section I • 2 SF • Trailing 0, 1 SF • Middle and trailing 0, 3 SF • 4 SF • Middle 0, 5 • Leading and trailing 0, 3 SF • Trailing and leading 0, 4 SF • trailing 0, 4 SF • Middle and trailing 0, 3 SF • Leading and middle 0, 4 SF

  29. 47 cm 706 cm 321.4 cm 162.6 g 133.8 g 69.9 cm 48.38 g 0.0071 cm 34.91 mL 365 g Section II

  30. 23.99 cm 11.6 g 184.7 mL 25.35 g 31.913 mL 42.7 m 0.000 311 m 23 km 76.0 m 1.28 cm Section III

  31. 24.8 cm2 72 cm2 18 m2 119 mm2 12.01 m2 40 cm2 10 m2 36 g2 (bad unit sorry) 2.6*106m2 4.13*10-6 cm2 Section IV

  32. 4.898 cm 2.563 m 6.10 km 5.092 mm 7.25 cm 2.757 m 0.948 m 4.76 km 117 mm 1.88*10-5 mm Section V

  33. Place total out of 50 Don’t like your score? Grab SF to complete tonight to change your score.

  34. SI Prefixes • September 17, 2007

  35. Scientific Notation # *10 exponent • # must be less than 10, but greater than 1 • If initial # > 1, then exponent is positive • If initial # < 1, then exponent is negative

  36. SI Prefixes • Giga – G billion times larger than m/L/g billion --- skip line --- skip line • Mega – M million times larger than m/L/g million --- --- • Kilo – k 1000 times larger than m/L/g thousand • Hecto – h 100 times larger than m/L/g hundred • Deka – da 10 times larger than m/L/g ten • Gram/meter/liter base units

  37. Deci – d ten times smaller than m/L/g tenth • Centi – c 100 times smaller than m/L/g hundredth • Milli – m 1000 times smaller than m/L/g thousandth --- --- • micro - m million times smaller than m/L/g millionth --- --- • nano – n billion times smaller than m/L/g billionth --- --- • pico – p trillion times smaller than m/L/g trillionth

  38. Mnemonic Device • Great Many Kids Have Dropped Dead Converting Metrics Minus Nine People • Abbreviation will be provided with steps between on tests and is on doors in back of room!

  39. Converting Between Units • Write down given • Put matching unit on bottom – to cancel • Put desired unit on top • Set LARGER unit equal to ONE • Count number of steps between units – the smaller unit will be 10steps between the larger and smaller units

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