SI Prefixes Agenda Review elements Correct SF worksheet Dend-writes on SI Prefixes Practice.
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Transcript of SI Prefixes Agenda Review elements Correct SF worksheet Dend-writes on SI Prefixes Practice.
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 AgainQuick 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?
Section I1. 2 SF
2. Trailing 0, 1 SF
3. Middle and trailing 0, 3 SF
4. 4 SF
5. Middle 0, 5
6. Leading and trailing 0, 3 SF
7. Trailing and leading 0, 4 SF
8. trailing 0, 4 SF
9. Middle and trailing 0, 3 SF
10. Leading and middle 0, 4 SF
Section II
1. 47 cm
2. 706 cm
3. 321.4 cm
4. 162.6 g
5. 133.8 g
6. 69.9 cm
7. 48.38 g
8. 0.0071 cm
9. 34.91 mL
10. 365 g
Section III
1. 23.99 cm
2. 11.6 g
3. 184.7 mL
4. 25.35 g
5. 31.913 mL
6. 42.7 m
7. 0.000 311 m
8. 23 km
9. 76.0 m
10. 1.28 cm
Section IV
1. 24.8 cm2
2. 72 cm2
3. 18 m2
4. 119 mm2
5. 12.01 m2
6. 40 cm2
7. 10 m2
8. 36 g2 (bad unit sorry)
9. 2.6*106m2
10. 4.13*10-6 cm2
Section V
1. 4.898 cm
2. 2.563 m
3. 6.10 km
4. 5.092 mm
5. 7.25 cm
6. 2.757 m
7. 0.948 m
8. 4.76 km
9. 117 mm
10. 1.88*10-5 mm
Place total out of 50
Don’t like your score? Grab SF to complete tonight to change your score.
SI Prefixes
September 17, 2007
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
SI PrefixesGiga – G billion times larger than m/L/g billion
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Mega – M million times larger than m/L/g million
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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
Deci – d ten times smaller than m/L/g tenthCenti – c 100 times smaller than m/L/g hundredthMilli – m 1000 times smaller than m/L/g thousandth------micro - 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
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!
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