Unit 2, Topic 4 - Concept Check (Precision, Accuracy, % Error)
Quiz
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Chemistry
•
10th - 12th Grade
•
Medium
Rebecca Speer
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a set of measurements (multiple measurements) are close to each other
Precision
Accuracy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a single measurement is close to an accepted value
Precision
Accuracy
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
% error can be a positive or negative value.
Yes
No
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.34 g, 2.33 g, 2.35 g, 2.34 g
These values show precision.
These values show accuracy.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Experimental Value = 25 °C. Accepted Value = 26 °C
These values show precision.
These values show accuracy.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calculation!!
If the accepted value of a measurement is 11.4 g and the experimental value of the measurement 11.0 g, what is the % error?
3.51 % error
-85.1 % error
-3.63 % error
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are 2 sources of error in taking measurements?
human error and instrumentation error
physical error and chemical error
alpha error and omega error
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