  Unit 1 Significant Figures Quiz

Multiple Choice (Choose the best answer.)

1. The measurement, 206 cm, has how many significant (measured) digits?

1

2

3

4

5

2. The measurement, 206.0 oC, has how many significant digits?

1

2

3

4

5

3. The measurement, 0.00206 g, has how many significant digits?

1

2

3

4

5

4. The measurement, 0.0020600 mole, has how many significant digits?

1

2

3

4

5

5. The measurement, 2.060 x 10 -3 coulombs, has how many significant digits?

1

2

3

4

5

6. The measurement, 20600 molecules, has how many significant digits?

1

2

3

4

5

2.5 cm + 0.50 cm + 0.055 cm = ?

3.055 cm

3.06 cm

3.1 cm

3.0 cm

3 cm

8. Subtract the following numbers and report your answer using significant figures:

416 g - 210 g = ?

206. g

206 g

210. g

210 g

200 g

9. Multiply the following three numbers and report your answer to the correct number of significant figures:

0.020 cm x 50 cm x 11.1 cm = ?

10 cm3

11 cm3

11. cm3

11.1 cm3

11.10 cm3

10. Divide the following three numbers and report your answer to the correct number of significant figures:

0.530 g / 0.1010 mL = ?

2 g/mL

5.2 g/mL

5.3 g/mL

5.25 g/mL

5.248 g/mL Back to Unit 1 main page Back toChemweb main page