# 1.2.1 Chapter 2

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1. Metric)Units of measurement) Length
Meter
2. Metric)Units of measurement) Volume
Liter
3. Metric)Units of measurement) Mass
Gram
4. Metric)Units of measurement) temperature
Degree celsius
5. Metric)Units of measurement) time
Second
6. Metric)abbreviations) meter
m
7. Metric)abbreviations) Liter
L
8. Metric)abbreviations) Gram
g
9. Metric)abbreviations) Degree Celsius
*C
10. Metric)abbreviations) second (s)
s
11. SI) units of measurement) Length
Meter
12. SI) units of measurement) volume
Cubic meter
13. SI) units of measurement) Mass
Kilogram
14. SI) units of measurement) temperature
Kelvin
15. SI) units of measurement) Time
Second (s)
16. SI) Abbreviations) meter
m
17. SI) Abbreviations) Cubic meter
m^3
18. SI) Abbreviations) Kilogram
kg
19. SI) Abbreviations)kelvin
K
20. SI) Abbreviations) second (s)
s
21. What are measured numbers?
Numbers that are measured by some instrument
22. What are exact numbers?
Those numbers that are obtained by counting items
23. rules for sig figs) Rule #1: A number is a sig fig if it is... (4)
-not a zero

-one or more zeros between nonzero digits

-one or more zeros at the end of a decimal number

-in the coefficient of a number written in scientific notation
24. rules for sig figs) Rule #2: a zero is not significant if it is...(2)
-at the beginning of a decimal number

-used as a placeholder in a large number without a decimal point
25. Sig figs in calcuration for rounding) rules for addition and subtraction
Final answer is written so that is has the same number of decimal places as the measurement having the fewest decimal placesĀ

ex) 4.55 + 5.2= answer should be in 1 decimal spot so tenths for this one
26. Sig figs in calcuration for rounding) rules for multiplication and division
Final answer is written with same number of sigfigs as the measurement with the fewest SFs

ex) 4.55 x 5.2= final answer should be rounded to 2 SFs

## Card Set Information

 Author: efrain12 ID: 323565 Filename: 1.2.1 Chapter 2 Updated: 2016-09-25 04:59:50 Tags: Chemistry Folders: Description: Chapter 2 Show Answers:

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