1. Unit 1 - MEASUREMENT III. Unit Conversions
SI Prefix Conversions and Metric Measurements
Dimensional Analysis
C. Johannesson

2. B. Dimensional Analysis
The “Factor-Label” Method
Units, or “labels” are canceled, or “factored” out
C. Johannesson

3. B. Dimensional Analysis
Steps:
1. Identify starting & ending units.
2. Line up conversion factors so units cancel.
3. Multiply all top numbers & divide by each bottom number.
4. Check units & answer.
C. Johannesson

4. B. Dimensional Analysis
Lining up conversion factors:
= 1
1 in = 2.54 cm
C. Johannesson
2.54 cm cm
1 =
1 in = 2.54 cm
1 in in

5. B. Dimensional Analysis
4) Your European hairdresser wants to cut your hair 8.0 cm shorter. How many inches will he be cutting off? cm in
C. Johannesson
8.0 cm
1 in
2.54 cm
= 3.2 in

6. B. Dimensional Analysis
How many milliliters are in 1.00 quart of milk?
Start w/ qt units
End w/ mL units
C. Johannesson
1.00 qt
1 L
1.057 qt
1000 mL
1 L
= 946 mL  qt mL

7. How many minutes are there in 380 seconds?

8. A MOLE IS A UNIT!