16. Which of the following is the BEST procedure for removing a hot test tube from a hot water
bath?
of
А When the test tube appears cool enough to
handle, pick it up using the tips of the fingers.
B Use a test tube clamp around the body of the
tube.
CUse a wet towel or cloth.
D Use tongs to pick up the test tube by its rim.
17. Mark and Trey were beginning their lab
activity when the teacher, Miss Sansaveria,
noticed that they were not using any safety
equipment. The activity used a test tube rack
and test tubes, several graduated cylinders, and
assorted chemicals including small pieces of
metal and some corrosive liquids. What pieces
of safety equipment should Mark and Trey
have?
A safety glasses, latex gloves, biohazards
container, fire extinguisher
B safety glasses, asbestos gloves, lab apron
Clab apron, nitrile gloves, safety glasses, broken
glass container
Dasbestos gloves, fire extinguisher, biohazards
container, lab apron
18. Mr. Duncan's biology class is observing
bacterial growth on agar solutions over time.
For safety reasons, which of the following
should NOT be allowed in the laboratory?
A open flames
B beakers
C biohazards container
D snack foods