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 and go to the next part

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 a laboratory fire erupts, immediately

• notify your instructor

• run for the fire extinguisher

• throw water on it

• open all the windows

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 science instructor that you wear contact lenses.

• keep it to yourself

After completing an experiment, all chemical wastes should be

• left at your lab station before the next lab.

• disposed of according to your instructor’s directions.

• dumped in the sink.

• taken home.

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

• an open door

• an open flame

• another student

• a sink

You are heating a piece of glass and now want to pick it up. You should

• use a rag or paper towel.

• pick up the end that looks cooler.

• use tongs.

• pour cold water on it.

You are heating a substance in a test tube. Always point the open end of the tube

• toward yourself.

• towards your lab partner.

• towards another classmate.

• away from all people.

If a lab experiment is not completed, you should

• discuss the issue with your instructor.

• sneak in after school and work alone.

• come in during lunch and finish while eating lunch.

• make up some results.

When gathering glassware and equipment for an experiment, you should

• read all directions carefully to know what equipment is necessary.

• examine all glassware to check for chips or cracks.

• clean any glassware that appears dirty.

• All of the above.