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


  7. Add the following three numbers and report your answer using significant figures:

    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


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