significant figures and calculations

Flashcard
•
Chemistry
•
10th - 12th 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. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.
2.
FLASHCARD QUESTION
Front
How many significant figures are in the number 0.00456?
Back
Three significant figures (4, 5, and 6). The leading zeros are not counted.
3.
FLASHCARD QUESTION
Front
What is the rule for determining significant figures in addition and subtraction?
Back
The result should be reported to the same number of decimal places as the measurement with the fewest decimal places.
4.
FLASHCARD QUESTION
Front
Calculate 12.11 + 0.3 and give your answer with the appropriate number of significant figures.
Back
12.41 (rounded to 12.4 due to the 0.3 having one decimal place).
5.
FLASHCARD QUESTION
Front
What is the rule for determining significant figures in multiplication and division?
Back
The result should have the same number of significant figures as the measurement with the fewest significant figures.
6.
FLASHCARD QUESTION
Front
Calculate 4.56 x 1.4 and give your answer with the appropriate number of significant figures.
Back
6.384 (rounded to 6.4 due to 1.4 having two significant figures).
7.
FLASHCARD QUESTION
Front
What is the significance of trailing zeros in a decimal number?
Back
Trailing zeros in a decimal number are significant because they indicate precision. For example, 2.300 has four significant figures.
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