Unit 0 Test review

If a laboratory fire erupts, immediately _________.

• Run for the fire extinguisher.

• Notify your instructor.

• Throw water on the fire.

• Open the windows.

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

• Toward yourself.

• Toward your lab partner.

• Toward another classmate.

• Away from all people.

True or False:

Return all unused chemicals to their original containers.

• True

• False

( Fill in the blank) Long hair should be ____________ in the laboratory.

• tied back

• cut

• down

• curled

Hot glass looks the same as cold glass.

• True

• False

The proper technique for smelling chemicals is ______________

• keeping your nose close to the glassware
• wafting
• to sniff only a small amount
• Trick question; you never are allowed to smell chemicals in class

Keeping your work area neat and clean is important because:

• My teacher is a neat-freak
• I won't lose my supplies in the clutter.
• It keeps the room from looking messy.
• It helps prevent accidents.

After completing an experiment, all wastes should be

• taken home

• tossed in the trash can

• disposed of according to your teacher's directions

• left out for someone else to clean

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

• to avoid eye strain

• to improve your vision

• so that you look super cool

• any time chemicals, heat or glassware are used

When is it OK to eat or drink at the lab tables?

• Always

• Only during group work, not during labs

• Never

• Whenever I'm hungry