Scientific Notation and Significant Digits Mastery Check Retest

Write 0.000972 in scientific notation.

• 9.72 x 10^-4
• 9.72 x 10^-3
• 972 x 10^-4
• 9.72 x 10⁴

Write 2.08 x 10²  in standard form.

• 208
• 0.0208
• 20,800
• 0.208

How do you write
1001
in scientific notation?

• 1.0001 x 10⁴
• 1.01 x 10⁵
• 1.001 x 10³
• 10.1 x 10³

Light travels at a rate of 186,000 miles per second.  Write this number in scientific notation.

• 1.86 x 10⁵
• 1.86 x 10⁴
• 18.6 x 10⁴
• 186 x 10³

Try to change the number back to standard form: 3.97  x  10^-2

• 0.000397
• 0.0397
• 0.0000397
• 0.397

Write 7.8 x 10^-3  in standard form.

• 0.0078
• 7,800
• 78
• 0.078

Determine the number of significant digits of 0.0080500

• 2

• 3

• 8

• 5

How many sig figs are found in 0.020 mL?

• 1

• 2

• 3

• 4

Significant digits are used in chemistry to show the _____________ of the measuring tool.

• units

• purpose

• precision

How many significant digits are there in "6605"?

• 1
• 2
• 3
• 4