Measurements and Calculations
Chapter 2 Study Guide
Honors Chemistry
1. List the three objectives found on page 29 of the text.
2. What is the scientific method?
3. Explain the difference between a qualitative measurement and a quantitative measurement.
4. What is a system?
5. Define the following terms:
hypothesis
model
theory
6. List the five objectives found on page 33 on the text.
7. What is the SI system?
8. Complete the following tables:
SI Base Units:
Quantity |
Symbol |
Unit Name |
Unit Abbreviation |
Length
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Mass
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Time
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Temperature
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Amount of substance
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Electric current
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Luminous intensity
|
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SI Prefixes:
Prefix |
Unit Abbreviation |
Exponential Factor |
Meaning |
tera
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giga
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mega
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kilo
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hecto
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deka
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deci
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centi
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milli
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micro
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nano
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pico
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femto
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atto
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9. What is a derived unit?
10. Complete the following table:
Derived SI Units:
Quantity |
Symbol |
Unit |
Unit Abbreviation |
Derivation |
Area
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Volume
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Density
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Molar Mass
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Concentration
|
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Molar Volume
|
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Energy
|
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|
11. What is volume?
12. What is density?
13. What is the density of a block of marble that occupies 310 cm3 and has a mass of 853 g?
14. Diamond has a density of 3.26 g/cm3. What is the mass of a diamond that has a volume of 0.350 cm3?
15. What is a conversion factor?
16. You have a chili recipe that serves ten. The recipe calls for two teaspoons of chili powder. How much chili powder do you need for 600 servings?
17. How many seconds are there in one day?
18. Express 750 dg in grams.
19. Convert 0.107 g to kilograms.
20. What is 0.073 cm in micrometers?
21. List the five objectives found on page 44 of the text.
22. Explain the difference between accuracy and precision.
23. What is percent error? How is it determined?
24. What is the percent error for a mass measurement of 17.7 g, given that the correct value is 21.2 g?
25. A volume is measured experimentally as 4.26 mL. What is the percent error, given that the correct value is 4.15 mL?
26. What are significant figures?
27. List the rules for determining significant figures.
28. How many significant figures are in each of the following terms?
123 meters
0.123 meter
40506 meters
9.8000 x 10 4 meters
30.0 meters
22 meters
0.07080 meter
98000 meters