CHM130 Lecture Day 2

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CHM130 Lecture Day 2

• Dimensional Analysis
• Metric Conversions
• Units of Measure
• Metric/Metric Conversions
• English/Metric Conversions
• Metric/English Conversion
• Temperature Scales
• Fahrenheit
• Celsius
• Kelvin
• Temperature Conversions

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• Dimensional Analysis
• Gasoline is 3.50 per gallon. Calculate the
  amount
• of gas that can be purchased with 50.00

What is given??__________ What is the
unknown??__________ What is the conversion
factor??______________ Set up the problem
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• Metric Conversions
• Units of Measure

Powers of 10 http//www.wordwizz.com/pages/10exp25
.htm
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http//www.unc.edu/rowlett/units/prefixes.html
tera- (T-) 1012 1 trillion giga- (G-) 109
1 billion mega- (M-) 106 1 million kilo- (k-)
103 1 thousand hecto- (h-) 102 1
hundred deka- (da-) 101 ten Unit of
measure deci- (d-)10-1 1 tenth centi-
(c-)10-2 1 hundredth milli- (m-)10-3
1 thousandth micro- (µ-)10-6 1
millionth nano- (n-)10-9 1 billionth pico-
(p-)10-12 1 trillionth femto- (f-)10-15
1 quadrillionth
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kilo- (k-) 103 1 thousand hecto- (h-) 102
1 hundred deka- (da-) 101 ten
gram (g) Unit of measure
meter (m) liter (L) deci- (d-)10-1
1 tenth centi- (c-)10-2 1
hundredth milli- (m-)10-3 1 thousandth
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• Metric/Metric Conversions

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1000 100 10
1 10 cents 1
cent 1 cent
kilo hecto deca Unit of measure
deci centi milli
K h da gram (g)
d c m Liter
(L) meter (m)
kg hg dag g
dg cg mg
kL hL daL L
dL cL mL
km hm dam m
dm cm mm
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• English/Metric Conversion
• Metric/English Conversion

2.54 cm 1 inch 946 mL 1 quart 454 grams 1
pound
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The distance from Mesa to Tucson is about 120
miles. Calculate the distance from Mesa to
Tucson in kilometers. (Use 2.54 cm per 1 inch)
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• Temperature Scales
• Fahrenheit Celsius Kelvin

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• Temperature Conversions

1. Celsius to Kelvin or Kelvin to Celsius
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• Temperature Conversions- Formula

• Celsius to Fahrenheit or
• Fahrenheit to Celsius

oC 5 (oF-32) 9
oF 9 oC 32 5
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• Temperature Conversions- 40 Method

A. Celsius to Fahrenheit or Fahrenheit to
Celsius
100 oC to oF
32 oF to oC
1. Add 40
2. Multiply or divide by 1.8
3. Subtract 40
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