Pearson Chemistry Chapter 3 Scientific Measurement

Express the following in scientific notation:

0.000457

• 457 x 10⁶

• 457 x 10^-6

• 4.57 x10⁴

• 4.57 x 10^-4

Convert to regular notation:

2.4 x 10^-3

• 2400

• 0.24

• 0.024

• 0.0024

Convert to standard notation:
3.05 x 10⁵ 

• 305,000
• 305
• 3,050,000
• 30,500

How many significant figures are there in the number 4004 ?

• 1

• 2

• 3

• 4

How many significant figures are there in the number 0.000008 ?

• 1

• 2

• 6

• 7

A description of how similar or close measurements are to each other is

• accuracy.

• precision.

• explanation.

• qualitative description.

Which is the correct scientific notation for the number 2,569,000?

• 2.569 x 10^-6

• 2.569 x 10³

• 2.569 x 10^-3

• 2.569 x 10⁶

How many significant figures are in the number 0.0952?

• 1

• 2

• 3

• 4

All the digits that can be known precisely in a measurement, plus a last estimated digit are called

• accuracies.

• precisions.

• significant figures.

• scientific notations.

How many significant figures are in 40,910?

• 3

• 5

• 4

• Answer not given