1. Sig Fig Math and Application

2. Warm-Up How many sig figs are in the following digits: 890 62.005
0.005
9.070
480.
And take out your HW!!! 

3. Objectives
Understand the reasons behind using sig figs is to say how uncertain we are with the materials we used
Understand how to apply sig figs when measuring in the lab
Apply the sig fig rules to mathematical problems

4. Agenda Drill Look at HW/Collect Sig Fig Math
Sig Fig Practice
Sig Fig Measurements and Scientific Notation
Looking Forward
Exit Slip HW

5. Sig Figs and Math!! 
When multiplying and dividing, limit and round the least number of significant figures for any of the factors.
1.35 x =
1.35 has 3 sig figs
2.467 has 4 sig figs
Since the lowest number is 3 sig figs, answer is: 3.33

6. Try On Your Own
0.021 x 3.23 x = 150/4 =

7. 0.021 x 3.23 x = 6.8

8. 150/4 = 40

9. More Math!
When adding and subtracting, limit and round your answer to the least number of places in any of the numbers to make up your answer.
= 53.21
12.01 has 2 digits after decimal
35.2 has 1 digit after decimal
6 has 0 digits after decimal
Since 6 does not have any digits after the number, the answer is: 53

10. = =

11. =

12. = 55

13. Measurement Practice
When making a measurement in lab, the last digit is always an estimate
This means that you have to estimate between the markings on the measuring instrument
Each measurement should be one place lower than the smallest marking on the measuring instrument

14. Sig Figs and Scientific Notation
Other Note
Sig Figs and Scientific Notation
6.02 x 1023
3 sig figs
Only count the numbers in front

15. Looking Forward – A Day Monday Tuesday Wednesday Thursday Friday
Sept. 19
Sig Fig Math
Measurement
Sept. 20
Sept. 21
Application of All Measurement Stuff
Sept. 22
Sept. 23
Density
Percent Error
Sept. 26
Sept. 27
Review
Sept. 28
Sept. 29
Unit 1 Test!!
Sept. 30

16. Looking Forward – B Day Monday Tuesday Wednesday Thursday Friday
Sept. 19
Sept. 20
Sig Fig Math
Measurement
Sept. 21
Sept. 22
Application of All Measurement Stuff
Sept. 23
Sept. 26
Density
Percent Error
Sept. 27
Sept. 28
Review
Sept. 29
Sept. 30
Unit 1 Test!!

17. In Review Packet, you should be working on:HW
In Review Packet, you should be working on:
Sig Figs: 23 – 31
Metric and Scientific Notation: 32 – 36
Sig Fig Math: 37 – 40
Accuracy vs. Precision: 49

18. Measurement Mania
Take the measurements in the lab with the correct number of sig figs
You will have 1 minute at each station
At lab station 8, start to work on Part 2
After we are in the lab, you will have 10 more minutes to finish the handout