Reviewing Significant Figures and Error Propagation

Flashcard
•
Chemistry, Other
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are significant figures?
Back
Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.
2.
FLASHCARD QUESTION
Front
How do you determine the number of significant figures in a measurement?
Back
Count all non-zero digits, any zeros between them, and trailing zeros in a decimal number. Leading zeros are not counted.
3.
FLASHCARD QUESTION
Front
What is absolute uncertainty?
Back
Absolute uncertainty is the margin of uncertainty in a measurement, expressed as a fixed quantity, indicating the range within which the true value lies.
4.
FLASHCARD QUESTION
Front
What is relative uncertainty?
Back
Relative uncertainty is the absolute uncertainty divided by the measured value, often expressed as a percentage.
5.
FLASHCARD QUESTION
Front
How do you calculate the percentage uncertainty?
Back
Percentage uncertainty = (Absolute uncertainty / Measured value) x 100%.
6.
FLASHCARD QUESTION
Front
What is error propagation?
Back
Error propagation refers to the way uncertainties in measurements affect the uncertainty in calculated results.
7.
FLASHCARD QUESTION
Front
How do you propagate uncertainties in addition or subtraction?
Back
When adding or subtracting measurements, the absolute uncertainties are added together to find the total uncertainty.
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