Significant figures

Flashcard
•
Chemistry
•
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 do you determine the number of significant figures in a number?
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 the significance of significant figures in calculations?
Back
Significant figures indicate the precision of measurements and calculations, ensuring that results reflect the accuracy of the data used.
4.
FLASHCARD QUESTION
Front
How many significant figures are in the number 0.00456?
Back
3 significant figures (4, 5, and 6). Leading zeros are not counted.
5.
FLASHCARD QUESTION
Front
How many significant figures are in the number 1000?
Back
1 significant figure (the '1'). Without a decimal point, trailing zeros are not counted.
6.
FLASHCARD QUESTION
Front
How many significant figures are in the number 1000.0?
Back
5 significant figures (1, 0, 0, 0, and the trailing zero after the decimal point).
7.
FLASHCARD QUESTION
Front
What is the result of 129.6 divided by 3, expressed with the correct number of significant figures?
Back
43.0 (the result should have 3 significant figures, based on the number with the least significant figures in the operation).
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