Chem – Significant Figures Part 2

How do we treat ZEROs between NON-ZERO numbers in significant figures?

Another easy set of ZEROs we have to deal with are ZEROs BETWEEN NON-ZERO numbers. ZEROs BETWEEN NON-ZERO numbers are ALWAYS significant. So when we go to count significant figures we definitely do count ZEROs between NON-ZERO numbers. These are all the numbers you are already used to counting. So they will be no different from when you are counting number places without using significant figures.

Examples: Determine the number of significant figures. VIDEO demonstration of the significant figures part 2 from the examples below.

Measured Number Number of Significant Figures
207 3
1409 4
84005 5
.6009 4

PRACTICE PROBLEMS: Determine the number of significant figures.

Measured Number Number of Significant Figures
303 3
90061 5
5407 4
.8026 4
4070903 7

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