Safety in Science Answers

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1
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What is the best reason for a student to remove a dangling bracelet when heating test tubes of acidic solutions in a hot-water bath in a chemistry lab?

A
to avoid reactions of the metal with gases in the lab
B
to reduce the risk of burns from heat conducted through the metal
C
to minimize the chance the bracelet pulling over a test tube, causing a spill
D
to prevent misreading the temperature of the bath on a thermometer
3

What information is given in the MSDS for acetic acid?

A
the mass of acetic acid that is consumed in an experiment
B
the volume of acetic acid that is needed for an experiment
C
the cost of acetic acid at various concentrations
D
the reactivity of acetic acid with various chemicals
5

When students work in a chemistry lab, the location of which item would be the most important for each student to know?

A
broom and dust pan, in case the student needs to sweep up broken glass
B
baking soda, in case the student needs to neutralize an acid spill
C
ice maker, in case the student needs to cool off hot glassware
D
safety shower, in case a chemical is spilled on the student’s body
6

When should a lab coat, safety goggles, and gloves be worn in the laboratory?

A
always, no exceptions
B
always, unless the teacher instructs otherwise
C
only when the teacher says to wear them
D
never in chemistry labs
7

The MSDS for chloroform indicates that it is a clear liquid that has a pleasant smell and substantial vapor pressure. People should avoid inhaling its vapors, and it is sensitive to light. Malik needs 10 mls of chloroform for an experiment. According to this information, how should he safely pour the chloroform?

A
He should locate the chloroform stored in a transparent container in chemical storage and pour directly into his beaker from that location.
B
He should locate the chloroform stored in a transparent container in chemical storage and should take it to the fume hood to pour.
C
He should locate the chloroform stored in a dark container in chemical storage and should take it to the fume hood to pour.
D
He should locate the chloroform stored in a dark container in chemical storage and pour directly into his beaker from that location.
8

What are close-toed shoes least likely to provide protection against?

A
hydrogen gas produced during a reaction
B
spilled water from a hot-water bath
C
broken glass from a dropped test tube
D
acid leaking from a cracked beaker
10

Where in the laboratory is long, unrestrained hair most likely to be a safety concern?

A
near an open flame
B
close to a fume hood
C
next to a concentrated sodium chloride solution
D
by a cabinet that contains flammable liquids

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