1. Basic Units
Length meters
Mass kilograms
Time seconds

2. Temperature Kelvin
Amount Chm Mole
Current Ampere
Luminous In Candela

3. Metric Prefixes
Mega(M) Nano(n)
Kilo(k)
Milli(m) Centi(c)
Micro(m)

4. Metric Prefixes (M) = 106 (n) = 10-9 (k) = 103 (m) = 10-3 (c) = 10-2

5. How close you are to the real answer
Accuracy
How close you are to the real answer

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

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

8. Meaningful digits in a number
Significant Digits
Meaningful digits in a number

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

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

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

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

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

14. Convert:
2.50 cm to Mm
4.2 ns to ms
3.15 kg to mg

15. Determine the length in miles of a light year
Light year = distance light travels in one year
c = 3.0 x 108 m/s
1 mile = 5280 ft
1 inch = 2.54 cm

16. Convert: 4.35 kg/L to mg/mL 2.31 mm/ns to cm/Ms

17. Calculate the volume in m3 occupied by 750 kg of gas with 1
Calculate the volume in m3 occupied by 750 kg of gas with 1.50 g/L 1 cm3 = 1 mL

18. Calculate the mass in kg of a board that has dimensions of 250 mm x 4
Calculate the mass in kg of a board that has dimensions of 250 mm x 4.0 x 104 mm x 2.5 m and had a density of 0.80 g/mL 1 ml = 1 cm3

19. Calculate the density of a 3. 14 x 103 kg cylinder that 5
Calculate the density of a 3.14 x 103 kg cylinder that 5.0 m long & has a diameter of 2.0 m.

20. 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

21. Measurements
Work problems on page 23

22. Sig. Figs.
Work problems on page 23

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

24. Measurements
Work problems on page 25

25. Define all the key terms on page 24

26. Work problems on page 25

27. Conversion Factors
Work problems on page 25