Scientific Method and Lab Safety

Identify the correct order of the scientific method.

• Conclusion, Hypothesis, Observation, Experiment,

  Retest,

  Data Collection

• Observation, Hypothesis, Experiment, Data Collection, Conclusion,

  Retest

• Hypothesis, Experiment, Observation,

  Data Collection,

  Retest,

  Conclusion

• Data Collection, Hypothesis,

  Observation, Conclusion,

  Retest,

  Experiment

Tags

NGSS.MS-PS2-2

Flammable materials, like alcohol, should never be dispensed or used near _____________.

• an open door.

• an open flame.

• another student.

• a sink.

If a laboratory fire erupts, immediately ___________________.

• notify your instructor.

• run for the fire extinguisher.

• throw water on the fire.

• open the windows.

Approved eye protection devices (such as goggles) are worn in the laboratory ______________________.

• to avoid eye strain.

• to improve your vision.

• only if you don't have corrective glasses.

• any time chemicals, heat, or glassware are used.

If you wear contact lenses in the school laboratory, __________________.

• take them out before starting the lab.

• you do not have to wear protective goggles.

• advise your instructor that you wear contact lenses.

• keep the information to yourself.

If you do not understand a direction or part of a lab procedure, you should ____________________.

• figure it out as you do the lab.

• try several methods until something works.

• ask the instructor before proceeding.

• skip it and go on to the next part.

After completing an experiment, all wastes should be _______________.

• disposed of according to your instructors directions.

• left at your lab station for the next class.

• dumped in the sink.

• taken home.

The following footwear is best in the laboratory: _____________.

• sandals.

• open-toed shoes.

• closed-toed shoes.

• shoes appropriate for the weather.

In the laboratory, the following should not be worn: ____________.

• loose clothing.

• dangling jewelry.

• sandals.

• all of the above.

Long hair in the laboratory must be ______________.

• cut short.

• held away from the experiment with one hand.

• always neatly groomed.

• tied back or kept entirely out of the way.