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

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

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

Find the conversions on your periodic table

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.

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

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

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

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

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

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

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

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

Practice Convert 12 moles H to grams H.