Exercises (Safety Rules)

Which of the following should you do to stay safe in the science lab?

• Do not bring food or drink into the laboratory

• Wear goggles

• Dispose of chemical waste as instructed by your teacher

• All answers are correct

What does the symbol mean?

• Irritant substances

• Poisonous substances / Toxic

• Radioactive material

• Explosive materials

Ensuring that the chemistry laboratory is safe.

• Not follow the experimental procedure

• Use the same container for two different chemicals

• Always ready to demonstrate laboratory techniques

• Wear open-toed shoes

Chemicals can enter the body in a variety of ways, which are by:

I. Diet

II. Dermal

III. Inhalation

IV. Ingestion

• II, III and IV

• I, III and IV

• III and IV

• I and II

The following checklist may be helpful in establishing a safe chemistry laboratory:

I. Upkeep of Laboratory and Equipment

II. Record keeping

III. Safety and Emergency Procedures

IV. Maintenance of Chemicals

• III and IV

• I, II and III

• I and II

• I, II, III and IV

Which of the following is an appropriate safety rule during a science experiment?

• John continues to work with his chemicals while there is a lot of other equipment around him that is not used.

• Sarah keeps her place clean and organized, while keeping her long hair looking beautiful.

• June makes sure to follow the instructions of the teacher and laboratory assistant. Her long hair was neatly tied.

• Mark is mixing his chemicals with acid at his desk with all his textbooks lying around.

While a group of students were conducting an experiment in the laboratory, a mercury thermometer fell to the floor and broke. Which of the following actions should not be done by students?

• Inform the teacher immediately.

• Make the spill area a restricted area.

• Pick up broken glass and spilled mercury by hand.

• Sprinkle sulfur powder to cover the spill.

As a teacher, they have responsibilities that need to be carried out while in the science lab which is...

I. Knowing how to use laboratory equipment and materials in the laboratory.

II. Knowing the hazard of all chemicals used.

III. Trust students to carry out experiments without supervision.

IV. Knowing in advance the protocol of the experiment.

• I, II and III

• II, III and IV

• I, II and IV

• I, II, III and IV

The following checklists may not acquaint students with the conduct expected in the chemistry laboratory.

• General Laboratory Conduct

• Student Safety Practices

• Record keeping

• Emergency Procedures

What should you do if a substance is not labelled?

• Taste it to find out what it is.

• Mix it with something to see if it reacts.

• Tell your lab instructor.

• Put a new label on it if you can guess what it is.