Sig Figs & Units

Sig Figs & Units

Assessment

Flashcard

Chemistry, Science, Mathematics

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, 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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