Fall Review Chemistry

1.  The number of significant figures in the measurement 170.040 km is ___.

• Three
• Four
• Five
• Six

1.  The number of significant figures in the measurement 170.040 km is ___.

• Three
• Four
• Five
• Six

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

• Open Flam

• another student

• open door

• sink

If a laboratory fire erupts, immediately

• open the windows

• thrown water on the fire

• run for the fire extinguisher

• notify your instructor

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

• only if you don't have corrective glasses

• to avoid eye strain

• any time chemicals, heat or glasswear are used

• to improve your vision

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

• pour cold water on it

• use a rag or paper towel

• use tongs

• pick up the end that looks cooler

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

• visit the school nurse after class

• see a doctor after school

• tell the science instructor at once

• apply firstr aid 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

• skip it and go on to the next step

• ask the instructor before proceeding

After completing an experiment, all chemical wastes should be

• taken home

• disposed of according to instructor directions

• dumpd in the sink

• left at your lab station for the next class

Personal eyeglasses provide as much protection as

• safety glasses

• splashproof chemical googles

• face shield

• none of these