Multiple Choice: Identify the
choice that best completes the statement or answers the question.
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1.
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Which of the following safety
symbols tells you to wear safety goggles to protect your eyes?
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2.
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Which safety symbol tells you
not to let any poisonous chemical come into contact with your
skin, and not to inhale its
vapors?
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3.
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If a fire erupts,
immediately
A | open the
windows. | C | throw water on the
fire. | B | run for the fire extinguisher. | D | notify the teacher. |
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4.
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Horseplay, practical jokes, or
pranks in the classroom are
A | always against the
rules. | C | not
dangerous. | B | okay if you are working alone. | D | okay. |
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5.
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Approved eye protection devices
(such as goggles) are worn in the laboratory
A | only if you do not have corrective
glasses. | C | to improve your
vision. | B | any time chemicals, heat, or glassware are
used. | D | to avoid eye
strain. |
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6.
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If a piece of equipment is not
working properly, stop, turn it off, and tell
A | your lab
partner. | C | the
principal. | B | your best friend in the class. | D | the teacher. |
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7.
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After completing an experiment,
all chemical wastes should be
A | left at you lab station for the next
class | C | dumped in the
sink | B | taken home | D | disposed of according to your teacher’s
directions |
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8.
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When you finish working with
chemicals, biological specimens, and other lab substances, always
A | wipe your hands immediately on your
clothes. | B | wipe your hands as soon as possible on a
towel. | C | treat your hands with skin lotion to prevent your skin from
drying. | D | wash your hands thoroughly with soap and
water. |
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9.
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The following activity is
permitted in the laboratory:
A | eating | C | chewing gum | B | drinking | D | None of the above. |
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10.
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You are heating a piece of
glass and now want to pick it up. You should
A | use
tongs. | C | use a rag or paper
towels. | B | pick up the end that looks cooler. | D | pour cold water on it. |
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11.
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The following footwear is
best in the
laboratory.
A | open-toed
shoes | C | closed-toed
shoes | B | sandals | D | all-weather shoes
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12.
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The reason for wafting or
fanning a small amount of chemical vapors toward the nose as a means to detect odors in a test tube
is to —
A | determine the relative strength of
the odor before smelling directly | B | avoid experimental error from excessive loss of mass of reactants or
products | C | protect the respiratory tract against potentially harmful
vapors | D | avoid splashing chemicals into the face of any
person |
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13.
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Which of the following is the
safest procedure for diluting a strong acid or base
with water?
A | Pour the water down a stirring rod
into the acid or base. | B | Any of the above procedures is acceptable | C | Pour the acid or base directly into the
water. | D | Pour the water directly into the acid or
base. |
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14.
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When dealing with a container
that has been heated, you should
A | hold the container with tongs or a
safety mitt. | B | touch it fi rst to see if it is already hot. | C | hold the container in your
hand. | D | give it to your lab partner to
hold. |
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15.
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Which of the following should
you NOT do when using an electrical apparatus?
A | Use it away from wet
areas. | B | Tie or tape its cords to your workbench. | C | Have its cords run across high-traffic
areas. | D | Unplug it by holding the plug. |
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16.
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Excess chemicals from an
experiment should be
A | poured down the drain or thrown in
the wastebasket. | B | mixed together. | C | returned to their original storage
containers. | D | disposed of as directed by your
teacher. |
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17.
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During an experiment with plant
materials, you should NOT do which of
the following?
A | Wear gloves when handling the plant
materials. | B | Touch your eyes after handling the material. | C | Wash any skin that comes into contact with the plant
materials. | D | Keep the different plant materials separate from one
another. |
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18.
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If you spill a chemical, you
should
A | tell the
teacher. | B | tell your lab partner to clean up the spill. | C | soak up the spill with paper towels and throw them in the
wastebasket. | D | clean up the spill with a
sponge. |
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19.
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The method for safely
determining the odor of a chemical is called
A | decanting. | C | inhaling. | B | wafting. | D | stirring. |
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20.
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You should not mix chemicals
together unless told to do so. Which choice is NOT a reason for this rule?
A | The mixture could splash out of the
container. | B | The mixture could be poisonous. | C | The mixture could produce a toxic
gas. | D | The mixture could explode. |
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21.
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If a liquid is infl ammable,
you should be sure to keep it
A | in the fume
hood. | C | next to sources of
heat. | B | near the sink. | D | away from heat or fl ames |
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22.
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Which of the following
precautions should you follow in the laboratory if you have long hair?
A | No precautions are necessary with
long hair. | B | Tie your hair back from your face. | C | Long hair is not allowed in the laboratory under any
circumstances. | D | Be sure your hair is clean. |
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23.
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You should wear goggles in the
lab when you are working with.
A | all of the
above. | B | chemicals. | C | flames. | D | objects that could become
airborne. |
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24.
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Before starting an
investigation, you should
A | read all the instructions and ask
your teacher if you have any questions. | B | try a procedure you think will work better. | C | read all the instructions and start the lab even if you
have questions. | D | try out the equipment so you know how it
works. |
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25.
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What is the first thing you should do if an accident occurs in your
classroom?
A | Find the emergency equipment. | B | Notify your teacher. | C | Start first aid
treatment. | D | Go to the nearest hospital. |
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26.
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Students are conducting an experiment to determine
if sugars are present in foods. They heat a test tube containing a sugar solution in a beaker of
water.
Which of these is an unsafe laboratory practice in this
experiment?
A | rinsing hands with water after handling the
materials | B | using a test tube clamp to hold the test
tube | C | heating the sugar solution in a closed test
tube | D | wearing safety goggles while heating the sugar
solution |
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27.
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Students will conduct a
laboratory experiment using the following materials: a Bunsen burner, a beaker of water, glass
tubing, four test tubes containing different chemicals, and rubber stoppers. Which of these steps is
most critical for students to follow when using these
materials in the lab?
A | placing a stopper on all
test tubes before heating them | B | writing the lab procedure in a notebook | C | wearing eye protection at all
times | D | washing hands before starting the
experiment |
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28.
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A scientist is
performing an investigation funded by a company. Which of these would be least likely to produce biased data?
A | being open minded and honest
throughout the research project | B | making the results please the company paying for the
research | C | using only the data that supports the
hypothesis | D | using personal opinions to decide the results of the
research |
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29.
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Cheryl wants to perform an investigation that
requires using hazardous chemicals. The following steps of the investigation are not in the correct
order.
1. Perform the investigation.
2.
Design the investigation.
3. Put on gloves, goggles, and an
apron.
4. Dispose of waste materials.
Which of these is the correct
sequence of steps to safely complete the investigation?
A | 1-3-4-2 | B | 4-1-3-2 | C | 2-3-1-4 | D | 3-2-1-4 |
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30.
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Which of these should be done before beginning a
laboratory investigation?
A | collect data | C | draw conclusions | B | record data on table | D | review the
procedure |
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