Pre-AP Chemistry Quiz 1

All non-zero digits are significant. True or False?

• True

• False

Zeros in front of the number are significant. True or False?

• True

• False

How many significant figures are there in 0.000426?

• 4

• 7

• 3

• 2

How many significant figures does 200.0 have?

• 4

• 3

• None of the above

Round this number to three significant figures; 4.8055

• 4.8055

• 4.806

• 4.85

• 4.81

Round this number to three significant figures; 3.478

• 3.5

• 3.48

• 3.479

• None of the above

Add 125.17 + 129 + 52.2. Your answer must have the correct significant figures.

• 306.37

• 306

• 306.3

• 307

What is 4,500,000,000.0 in scientific notation?

• 4.5 x 10⁷

• 4.5 x 10⁶

• 4.5 x 10⁹

• None of the above

How many significant figures does 0.0000000000915?

• 14

• 2

• 3

• None of the above

Zeros between non-zero digits are always significant. True or False?

• True

• False