Chapter 1 Test Review - Measurements and Significant figures

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.

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 do not count.

Front

Back

5.12

Front

How many significant figures are in the measurement 153.0 mL?

Back

4

Front

How many significant figures are in the measurement 216 m?

Back

3

Front

Which type of zeros sometimes count for significant figures?

Back

Trailing zeros.

Front

How many significant figures are in the measurement 0.001 g?

Back

1

Front

What is the rule for multiplying and dividing significant figures?

Back

The result should have the same number of significant figures as the measurement with the least number of significant figures.

Front

What is the rule for adding and subtracting significant figures?

Back

The result should be rounded to the least precise decimal place of any number in the operation.

Front

Give an example of a number with 3 significant figures.

Back

123 or 0.00456 (the leading zeros do not count).