1. Dimensional Analysis

2. Conversion Factors
a ratio of equivalent measurements
numerator = denominator
See list

3. Conversion Factors
exact quantities, so they have infinite sig. figs and should not affect the amount of sig. figs. you report in your answer

4. Dimensional Analysis
a way to analyze and solve problems in chemistry using conversion factors

5. Your school club has sold 600 tickets to a chili supper.
Your recipe serves 10 people. The recipe calls for
2 tsps. of chili powder. How many tsps. of chili powder is needed for 600. people?

6. Examples: Convert 8.50 in to cm

7. Examples
How many quarters are in 5 dollars?
How many inches are in 12.0 feet?

8. Multi-Step DA
Recall the chili problem

9. Multi-Step DA
A lab experiment required 7.5 dg of Magnesium per student. I have 100. Students. How many grams of Magnesium do I need?

10. Examples