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