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Unit 2, Topic 4 - Concept Check (Precision, Accuracy, % Error)

Authored by Rebecca Speer

Chemistry

10th - 12th Grade

Used 13+ times

Unit 2, Topic 4 - Concept Check (Precision, Accuracy, % Error)
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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

Media Image

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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