Introduction to Dimensional Analysis

Bellwork

Go to Canvas and complete your bellwork
Bellwork 8/28 - Labs

Dimensional Analysis

Page 19

Using Dimensional Analysis and Conversion Factors

Dropdown

Conversion factors are ​

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that show a relationship between two units and ​

Select answer

be flipped so either unit is on top.

Metric Prefixes

In chemistry the prefix kilo-, and milli- are used very frequently!

kilo = 1000          milli = 0.001

There are 1,000 mg in 1 g

There are 1,000 gram in 1 kg

Dimensional Analysis Tips

Your units must match diagonally.

You may need multiple steps. That's ok!

You can use this for any conversion.

​“I do”

​How many hours are in one year?

How many seconds are in 2 months? Assume that each month has 30 days.

​"We Do"

​The density of a substance is 1.25 grams per cubic centimeter. Convert this density to kilograms per cubic meter.




Convert 90 kilometers per hour to meters per second.

Multiple Choice

The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet?  (3 ft=1 yd)

• 0.867 ft

• 7.8 ft

• 8.07 ft

• 8.27 ft

Multiple Choice

Convert 2.5 grams into milligrams (1000 mg = 1 gram)

• 25 mg
• 25,000 mg
• 250 mg
• 2500 mg

Multiple Choice

How many gallons are in a pool that holds 758,000 Liters?
(1 gallon = 3.79 Liters)

• 200
• 20,000
• 200,000
• 2,000,000

Multiple Choice

The length of a desk is 3.5 feet. How many centimeters is the length?  (there are 2.54 cm in an inch; 12 inches in a foot)

• 60
• 120.23
• 106.68
• 117.12

Multiple Choice

How many walking paces are there approximately as you walk down Main Street (0.25 miles)? 1 mile = 5280 feet; 1 foot = 12 inches; 22 inches = 1 walking pace

• 15,840 walking paces

• 720 walking paces

• 720 inches

• 2420 walking paces