Moles, Units, and Conversion Factors

[Pages:19]Moles, Units, and Conversion Factors

Presented by: Center for Teaching and Learning

and Daniel Fox

Why do we measure?

? standardize ? compare ? quantify

Examples of measurement

? Speed- 100 MPH ? Cooking- 4 cups flour ? Building- 8 foot walls ? Weight- lbs, g, kg, etc. ? Money- dollars, euros, yen ? Atoms- (??!!)

English Measurement System

? Length: ? 12 inches (in) = 1 foot (ft)

3 feet = 1 yard (yd) 5280 feet = 1 mile (mi) ? Capacity: ? 3 teaspoons (tsp) = 1 tablespoon (tbsp) 16 tbsp = 1 cup (c) 8 ounces (oz) = 1 c 2 c = 1 pint (pt) 2 pt = 1 quart (qt) 4 qt = 1 gallon (gal) ? Weight: ? 16 ounces (oz) = 1 pound (lb) 2000 lb = 1 ton



Metric System of Measurement

? Length - meters ? Volume- Liters ? Mass - grams ? Time - seconds

English-Metric Conversions



Scientific Notation

1,540,000,000,000 =

1.54 X 1012

0.00000000000154 =

1.54 X 10-12

Write these in scientific notation:

65,800,000 =

6.58 X 107

0.125

=

1.25 X 10-1

Metric to metric conversions

109

106

103 100 10-1

10-2

10-3

10-6

10-9

m Giga-(G) Mega-(M) kilo-(k)

deci-(d) centi-(c) milli-(m) micro-(?) nano-(n)

g

L Larger Measurements

Smaller Measurements

s

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