1. Drill: Classify each of the following: Filtered Sea water Orange juice Mercury Salt Pure ice water

2. Review Drill, Grade HW & Collect Both

3. CHM II HW Review PPs 1 – 4 Work the attached assignment & turn it in tomorrow.

4. Basic Units Length meters Mass kilograms Time seconds

5. TemperatureKelvin Amount Chm Mole CurrentAmpere Luminous InCandela

6. Metric Prefixes Giga (G) Mega(M) Kilo(k) Nano(n) Milli(m) Micro(  ) Centi(c)

7. Metric Prefixes (G) = 10 9 (M) = 10 6 (k) = 10 3 (n) = 10 -9 (m) = 10 -3 (  ) = 10 -6 (c) = 10 -2

8. Accuracy How close you are to the real answer

9. Precision How well one can repeat his or her work Repeatability

10. Uncertainty All measurements have a degree of unreliability Usually in the last digit of a measurement

11. 0 1 2 3 Burette Measurements Each measurement should have 2 decimals Solve the correct reading for the volume in the burette

12. 0 1 2 3 Burette Measurements Each measurement should have 2 decimals ~ 1.36 the last decimal will have uncertainty

13. Significant Digits Meaningful digits in a number

14. Determining Significance All non-zero digits All zeros between non-zero numbers All trailing zeros if there is a decimal place

15. Multiplication Uncertainty The answer should have the same number of significant digits as the multiplier with the least number of SD Same for division

16. Addition Uncertainty When adding, line up decimal place & add The decimal places in the answer should = the least Same for subtraction

17. Scientific Notation M x 10 n M = 1.00  M < 10.00 n = an integer

18. Conversion Factor Ratio equal to one 12 inches/1 foot = 1 Multiply one unit by a conversion to obtain another unit w/o affecting magnitude

19. Convert: 2.50 cm to Mm 4.2 ns to ms 3.15 kg to  g

20. Convert: 4.35 kg/L to mg/  L 2.31 mm/ns to cm/Ms

21. Calculate the volume in m 3 occupied by 750 kg of gas with 1.50 g/L 1 cm 3 = 1 mL

22. Calculate the mass in kg of a board that has dimensions of 250 mm x 4.0 x 10 4  m x 2.5 m and had a density of 0.80 g/mL 1 ml = 1 cm 3

23. Calculate the density in g/mL of a 3.14 x 10 3 kg cylinder that 5.0 m long & has a diameter of 2.0 m.

24. How many nm will an object travel in 1/132 ks at 720 miles per hour 1 inch = 2.54 cm 1 mile = 5280 ft

25. Determine the length in miles of a light year Light year = distance light travels in one year c = 3.0 x 10 8 m/s 1 mile = 5280 ft 1 inch = 2.54 cm

26. Measurements Work problems 5 - 12 on page 23

27. Sig. Figs. Work problems 17 - 24 on page 23

28. Conv. Factors Work problems 28 & 36 on page 24

29. Measurements Work problems 5 - 12 on page 25

30. Define all the key terms on page 24

31. Work problems 13 - 16 on page 25

32. Conversion Factors Work problems 37 - 46 on page 25