1. CHEMISTRY SEPT 10, 2014 DIMENSIONAL ANALYSIS BASIC

2. SCIENCE STARTER Define measurement What is the difference between quantitative and qualitative data?

3. OBJECTIVES SWBAT applied dimensional analysis

4. AGENDA SCIENCE STARTER DIMENSIONAL ANALYSIS APPLICATION

6. EQUIVALENT RELATIONSHIP 1 cake = 4 slices of cake – So, 1 cake or 4 slices of cake is the same amount of cake. – So, this ratio is equal to one another

7. CAKE EXAMPLE How many slices of cake do you have if you have 2 cakes?

8. CAKE MATH

10. Dimensional analysis Converting a given unit into another unit

11. Dimensional analysis

12. Example Cake Example – How many slices of cake do you have if you have 2 cake? Equivalent relationship: 1 cake = 4 slices

14. EXAMPLE Convert 2 feet into inches – Equivalent relationship = 1 foot = 12 inches

15. Step 1: Identify what you know A = 2 feet C = 1 foot B = 12 inches D = ______ inches (unknown amount)

16. Step 2: Identify the equivalent relationship(s) 1 foot = 12 inches

17. Step 3: Set up the dimensional analysis equation

18. Step 4: Cancel out the similar units located on opposite side of one another

19. Step 5: Do the math

20. KIT KAT EXAMPLE What happens when you need to use more than one Equivalent Relationship. Let’s look at the KIT KAT EXAMPLE.

21. KIT KAT EXAMPLE DEMONSTRATE LIVE EXAMPLE

22. MULTIPLE EQUIVALENT RELATIONSHIPS Many time, you may have to use multiple equivalent relationships to get to the final unit you want.

23. DIMENSIONAL ANALYSIS FOR MULTIPLE EQUIVALENT RELATIONSHIP

24. Dimensional analysis

25. KIT KAT EXAMPLE How many pieces of Kit Kat do you have if you bought 5 bags?

26. KIT KAT EQUIVALENT RELATIONSHIPS 1 bag = 21 Kit Kats. – So, this ratio is equal to one another 1 Kit Kats = 2 pieces – So, this ratio is equal to one another

28. PRACTICES WORK ON THE PRACTICE PROBLEMS YOU HAVE 10 MINUTES

29. EQUIVALENT RELATIONSHIPS 1 FT = 12 INCHES 1 FT = 0.3048 M 1 M = 100 CM 1 G = 100 CG 1 KG = 1000 G 1 MIN = 60 SEC 1 HR = 60 MIN