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

Gasoline is $3.50 per gallon. Calculate the amount 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

Metric Conversions Units of Measure Powers of 10 http://www.wordwizz.com/pages/10exp25.htm

centi- (c-)10-2 1 hundredth milli- (m-)10-3 1 thousandth 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

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

Metric/Metric Conversions

kilo hecto deca Unit of measure deci centi milli K h da gram (g) d c m $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

English/Metric Conversion Metric/English Conversion 2.54 cm = 1 inch 946 mL = 1 quart 454 grams = 1 pound

The distance from Mesa to Tucson is about 120 miles 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)

Temperature Scales Fahrenheit Celsius Kelvin

Temperature Conversions 1. Celsius to Kelvin or Kelvin to Celsius

Temperature Conversions- Formula Celsius to Fahrenheit or Fahrenheit to Celsius oC = 5 (oF-32) 9 oF = 9 oC + 32 5

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