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Dimensional Analysis Converting the Big Kids Way!.

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Presentation on theme: "Dimensional Analysis Converting the Big Kids Way!."— Presentation transcript:

1 Dimensional Analysis Converting the Big Kids Way!

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

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

4 Periodic Table Find the conversions on your periodic table

5 Dimensional Analysis First know what you START WITH! –Dont forget units –Dont 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 SSSS S x S SSSS OR

8 Put it together Start: 360 sEnd: x ms 360 s x (some conversion) = something s SSSS

9 Put it together Start: 360 sEnd: 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 s 1 ms. 1 x s 1 x s 1 ms OR

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

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

13 Steps to Dimensional Analysis 1.Label start (with unit) 2.Label end (with unit) 3.Identify conversion factor 4.Set up railroad 5.Write answer 6.Sig Fig final answer

14 Practice Convert 12 moles H to grams H.


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