Lab Safety and Measurement Test

If a fire erupts, immediately

• notify the teacher.
• run for the fire extinguisher.
• throw water on the fire.
• open the window.

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 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 chemical wastes should be

• left at your lab station for the next class.
• disposed of according to your teacher's directions.
• dumped in the sink.
• taken home.

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

• toward yourself.
• toward your lab partner.
• toward another classmate.
• away from all people.

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

• use a rag or paper towels.
• pick it up at the end that looks cooler.
• use tongs,
• pour cold water on it.

You have been injured in the laboratory (cut, burn, etc.). First you should

• tell your science teacher at once.
• visit the school nurse after class.
• see a doctor after school
• apply first aid yourself.

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.

Long hair in the laboratory must be

• cut short.
• held away from the experiment with one hand.
• tied back or kept entirely out of the way with a hair band, or other hair accessory.
• always neatly groomed.

During laboratory experiments, the following should not be worn.

• loose clothing.
• long hair.
• dangling jewelry.
• all of the above.