FINAL REVIEW

The following measurements were collected as part of an experiment. Determine the answer with respect to significant digits. A. 18.17 m^3 B. 18.1 m^3 C. 18 m^3 D. 18.1724 m

• A. 18.17 m^3

• B. 18.1 m^3

• C. 18 m^3

• D. 18.1724 m

What must be done for the results of an experiment to be considered valid?

• A. The results must be shown in a graph.

• B. The results must be published in a national journal.

• C. The experiment must be repeated numerous times and the same results obtained.

• D. The results must be only quantitative.

Which action should be taken immediately if sodium hydroxide (NaOH) got into a person's eye in the laboratory?

• A. Flush the eye with water.

• B. Call for an ambulance.

• C. Rub the eye to encourage tearing.

• D. Flush the eye with an acid.

Ingrid is conducting an experiment to find the most flammable clothing fabric. What process is she utilizing for this inquiry?

• A. Scientific investigation

• B. Solutions development

• C. Technological design

• D. Mathematical analysis

Using the rules for significant figures, the sum of 12.04 liters and 1.091 liters should be expressed as

• A. 13.13 liters

• B. 13.1 liters

• C. 13.131 liters

• D. 13.10 liters

Which of the following contains the greatest number of significant figures?

• A. 51.0g

• B. 50.050 g

• C. 505000g

• D. 5.050g

Approved laboratory safety glasses must be worn

• A. while dispensing liquids

• B. at all times

• C. while centrifuging liquids

• D. when lighting a bunsen burner

The student found a length measurement to be 0.06748 cm. What is the measurement rounded to two significant digits?

• A. 0.0675 cm

• B. 0.067 cm

• C. 0.0670 cm

• D. 0.07 cm

For an experiment, 8.3 mL of HBr are needed. What is the best instrument to use for measuring this volume of liquid?

• A. 10 mL distilling flask

• B. 10 mL graduated cylinder

• C. 10 mL beaker

• D. 10 mL test tube

What is the percent error if a student reads a volume measurement of 57.5 mL and the actual volume is 58.5 mL?

• A. 1.7%

• B. 0.17%

• C. 1.0%

• D. 10.0%