# Chemistry: Chapter 2

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1. How do you measure the volume of an irregular shaped object?
You must submerge it
2. How do you find Displacement?:
(3)
• Find the initial volume before the object
• Find the volume after displacing water
• Subtract the final volume from the initial volume
3. How is mass measured?
By a pan balance
4. When using a Balance why do you do the Weigh Subtraction method?
You remove the error in the balance
5. What are the measurements of Temperature?
• Fahrenheit
• Celsius
• Kelvin
6. The range from freezing point to boiling point on this scale is 32 to 212 degrees
Fahrenheit
7. The range from freezing point to boiling point on this scale is 0 to 100 degrees
Celsius
8. Why is the metric system better?
(3)
• 1 Unit of measurement for each physical quantity
• Based on 10's
• It's universal
9. Other countries refuse to buy our products if the product is labeled with...
Metric Units
10. How close a measurement is to the accepted value
-Correct
Accuracy
11. How close a series of measurements are to each other
-Repeated
Precision
12. What is this an example of?:
1 quiz does not define how well you're going to do this year
Accuracy
13. What is this an example of?:
Getting a good grade on every test shows you're going to do well this year
Precision
14. What is the purpose of a Significant Figure?
Describes how accurate and precise the tool is
15. What is the purpose of Scientific Notation?
(2)
• To simplify large #'s
• To show significant figures
16. What is the purpose of dimension analysis?
To convert one unit to another
17. How to multiply/divide numbers?
Multiply/divide and then your answer should look like one of the numbers with the least amount of significant figures