1. Converting the Big Kids Way!
Dimensional Analysis
Converting the Big Kids Way!

2. So Go Back to Conversions
1 m = __________ mm
1 000
1 m = 1000 mm
1 m = 1
1000 mm .

3. Other Conversions 100 cm = 1 m 1000 g = 1 kg 10 dL = 1 L 1 m = 1OR OR OR

4. Find the conversions on your periodic table

5. Dimensional Analysis First know what you START WITH!
Don’t forget units
Don’t lose decimal point
Second know what you END WITH
It is usually unknown except for the unit.

6. Put it together Start: 360 s End: x ms 360 s x (some conversion)
(rest of conversion)

7. Put it together Think: Which gets rid of “s” So you have to use “ ” S
S x S OR S

8. Put it together Start: 360 s End: x ms 360 s x (some conversion) =
something “s” S

9. Put it together Start: 360 s End: x ms
We want “ms” so it goes in the numerator
360 s x something “ms”
something “s”
Find the conversion on your periodic table

10. Put it together Periodic Table: 1 ms = 1 x 10-3 s 1 ms . 1 x 10-3 s OR

11. Put it together Start: 360 s End: x ms End: x ms Which works better?
360 s x
1 ms .
1 x 10-3 s
1 x 10-3 s
1 ms

12. Put it together 360 s x Put it in your calculator 360,000 ms 1 ms .
1 x 10-3 s

13. Steps to Dimensional Analysis
Label start (with unit)
Label end (with unit)
Identify conversion factor
Set up railroad
Write answer
Sig Fig final answer

14. Practice
Convert 12 moles H to grams H.