What are significant figures?
Sig Figs & Units

Flashcard
•
Chemistry, Science, Mathematics
•
10th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
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 round a number to a specific number of significant figures?
Back
To round a number to a specific number of significant figures, identify the last significant figure you want to keep, look at the digit immediately to the right, and round up if it is 5 or greater, or leave it unchanged if it is less than 5.
3.
FLASHCARD QUESTION
Front
What is the significance of trailing zeros in a number?
Back
Trailing zeros in a number are significant only if they are to the right of a decimal point. For example, in 100.0, all four digits are significant.
4.
FLASHCARD QUESTION
Front
How many significant figures are in the number 0.00456?
Back
There are three significant figures in the number 0.00456 (the digits 4, 5, and 6). The leading zeros are not significant.
5.
FLASHCARD QUESTION
Front
What is scientific notation?
Back
Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form, using the format a × 10^n, where 1 ≤ a < 10 and n is an integer.
6.
FLASHCARD QUESTION
Front
Convert the number 0.00000789 to scientific notation.
Back
7.89 x 10^-6.
7.
FLASHCARD QUESTION
Front
What is the prefix for one millionth in the metric system?
Back
The prefix for one millionth is 'micro', represented by the symbol 'μ'.
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