Sci. Notation, Sig Figs, Units, and Measurement

Which of the following shows 0.0000000180 written in correct scientific notation?

• 0.180 x 10^-7

• 1.80 x 10^-8

• 1.80 x 10⁸

• 18.0 x 10^-9

Which of the following shows 85,000,000 written correctly in scientific notation?

• 85 x 10⁶

• 0.85 x 10⁸

• 8.5 x 10^-7

• 8.5 x 10⁷

Which of the following shows 4,000 written correctly in scientific notation?

• 4.0 x 10³

• 4 x 10^-3

• 4 x 10³

• 4.0 x 10^-3

Which of the following shows 0.00049 written in correct scientific notation?

• 4.9 x 10^-4

• 0.49 x 10^-3

• 49 x 10^-5

• 0.490

Which of the following are NOT written in proper scientific notation? (Multiple answers may be selected).

• 0.55 x 10⁵

• 2.51 x 10⁵

• 8.9 x 10^-2

• 36.5 x 10⁴

What is the SI unit for mass?

• pound

• ton

• kilogram

• ounce

What is the SI unit for length?

• meter

• foot

• mile

• inch

What is the SI Unit for volume?

• cup

• liter

• ounce

• gallon

When taking a measurement, the last digit recorded must always be _________________.

• certain

• zero

• even

• estimated

What is the volume in the graduated cylinder expressed to the correct number of significant figures?

• 20 mL

• 24 mL

• 24.0 mL

• 25.00 mL