CHM-101 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 many significant figures does the number 0.998005 have?

Back

6

Front

How many significant figures are in the number 5.00000008?

Back

9

Front

How many significant figures does the number 4004 have?

Back

4

Front

Which of the following numbers has three significant figures: 1014 miles, 101 feet, 1000 yards?

Back

101 feet

Front

How many significant figures does the number 0.002040 have?

Back

4

Front

What is the rule for counting significant figures in a number with leading zeros?

Back

Leading zeros are not counted as significant figures.

Front

What is the rule for counting significant figures in a number with trailing zeros?

Back

Trailing zeros in a decimal number are counted as significant figures.

Front

How do you determine the number of significant figures in a whole number without a decimal point?

Back

In a whole number without a decimal point, trailing zeros are not considered significant.

Front

What is the significance of significant figures in scientific measurements?

Back

Significant figures indicate the precision of a measurement and help communicate the uncertainty in the data.