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General Chemistry 2 Online: Laboratory Safety

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160 views14 pages

General Chemistry 2 Online: Laboratory Safety

Uploaded by

irfan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
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General Chemistry 2 Online

Laboratory Safety
Final Report
Student Name Bader Alanazi
Student ID 179041
Lesson Laboratory Safety
Institution Arkansas State University-Newport
Session Summer 2021 - D2-25
Course General Chemistry 2 Online
Instructor Ed Jones

Test Your Knowledge

1. Match each term with the best description. 

Tightly woven fabric used to smother


1 Fire blanket
and extinguish a fire

Consists of absorbent material that can


be ringed around a chemical spill until 2 Spill containment kit
the spill can be neutralized

Device used to control small fires in an


3 Fire extinguisher
emergency situation

Provides chemical, physical, health, and


safety information regarding chemical 4 Safety Data Sheet
reagents and supplies

Area containing an exhaust fan to expel


5 Fume hood
noxious fumes from a laboratory

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2. Label each image with the correct term.

1 Safety shower 2 Eye-wash station 3 First aid kit

4 Burner fuel 5 Fire extinguisher

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3. Categorize each statement as true or false.

True False

1 2

Always wear safety goggles, long shirts Induce vomiting and drink copious
and pants, closed-toe shoes, and gloves amounts of water if chemicals are
when conducting experiments. ingested.

Neutralize acid spills using sodium Conduct experiments in a small, closed-off


bicarbonate. room, with no ventilation or water.

Paper towels and water are a good


substitute for a spill containment kit.

Exploration

1. For the most part, items in the lab kit are safe for use around children and
pets.

True

False

2. The laboratory kit contains _____.

small items that can be choking hazards

chemicals that can cause burns

sharp objects that can cause cuts

All of the above

3. Eating, drinking, and smoking during an experiment are never allowed.

True

False

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4. If any chemical in the kit has been ingested, you should _____.

call the Poison Control Center

seek a physician

both call the Poison Control Center and seek a physician

5. After using loops, swabs, toothpicks, spreaders or any other equipment to


transfer cultures, immerse the contaminated equipment in ______.

pure bleach

a strong acid

tap water

All of the above

6. Burns can occur when skin comes in contact with _____.

acids

bases

acids and bases

7. To test the smell of a substance, partially fill your lungs with air and, while
standing slightly back from the fumes, use your hand to waft the odors gently
toward your nose.

True

False

8. Most pieces of glassware are designed to be heated.

True

False

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9. To better protect the body from chemical spills, wear _____.

long-sleeved shirts

full-length pants

closed-toe shoes

All of the above

10. When creating a home-laboratory, there are substitutions for the safety
equipment found in an on-campus laboratory.

True

False

11. At home, a _____ is the best substitute for a laboratory safety shower.

water can

bottle of water

kitchen faucet

bathroom shower

12. A Safety Data Sheet contains information about first-aid procedures,


required protective equipment, and health effects.

True

False

Exercise 1
Data Table 1: Lab Safety Equipment Alternatives

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Shower or Sink Paper Towels Well-Ventilated No Substitution
Area

laboratory shower spill containment fume hood first aid kit


kit

eyewash station Fire Extinguisher

safety goggles

Exercise 2
Data Table 2: Sodium Hypochlorite SDS information

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Items SDS Information

Physical State liquid

Route of Exposure & Symptoms eye contact, skin


contact,
inhalation, and
ingestion
can cause burning
and
irritation

Protective Equipment As in any fire, wear


selfcontained
breathing
apparatus
pressuredemand,
MSHA/NIOSH
(approved or
equivalent)
and full protective
gear.

First Aid Procedures Get medical help


immediately. Some
other
things that can be
done
are flushing eyes for
15
min, flushing skin
with
water for at least 15
min,
giving 2-4 cups of
milk or
water, and give
artificial
respirations/ oxygen
as
needed.

Fire-fighting Measures To extinguish media


use
water spray, dry
chemical, carbon
dioxide,
or appropriate foam.

Chemical Reactivity

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Bleach solutions
decompose slowly at
normal temperatures
releasing low
concentrations of
corrosive chlorine
gas.
Decomposition is
influenced by
temperature,
concentration, pH,
ionic
strength, exposure to
light, and the
presence of
metals.

Safe Storage Store in a tightly


closed
container and in a
cool,
dry, well-ventilated
area
away from
incompatible
substances.

Safe Disposal Bleach can be poured


down the dink by
small
amounts as long as
the
bleach is diluted by
the
running water.

Environmental/ Ecotoxicity No data/information is


available

Spill Cleanup Procedures Absorb spill using an


absorbent,
noncombustible
material
such as earth, sand,
or
vermiculite. Also
provide
ventilation

Exercise 3

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1. What are small-scale techniques?

Very small quantities of chemicals to protect ones safety during experiments at home.

2. List 5 precautions that must be taken before beginning an experiment.

1. Protect work table/surface by covering it with plastic sheeting or a white garbage bag
2. Have an open window or stove exhaust fan to provide proper ventilation
3. Have accessibility to water nearby (sink, bottled water, or bathroom shower)
4. Have a first aid kit nearby
5. Keep sodium bicarbonate (baking soda) on hand to neutralize spilled assets because the
concentrated acids can cause serious burns

3. As indicated in the video, what common substance can be used to neutralize a spilled
acid?

sodium bicarbonate (baking soda).

4. According to the video, why should a used chemical container never be refilled?

Used chemical containers can be contaminated and an unexpected and potentially unpleasant
reaction can occur.

5. Certain glass objects are not meant to be heated and could shatter if exposed to a heat
source. What two examples of heat-sensitive glassware are given in the video?

Two examples of heat-sensitive glassware are graduated cylinders and flasks, and can shatter when
exposed to heat source.

Exercise 4
Data Table 3: Part 1 and Part 2 of the Safety Contract

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Part Agreement

Part 1: It is impossible to control students’ use of HOL Science I agree:


products, related kits, and students’ work environments. The author(s) yes
of HOL Science content, the instructors and institutions that adopt it,
and Hands-On Labs, Inc. - the publisher and producer of HOL Science -
authorize the use of these educational products only on the express
condition that the purchasers and users accept full and complete
responsibility for all and any liability related to their use of same.
Please review this document several times until you are certain you
understand and will fully abide by its terms.

Part 2: I am a responsible adult who has read, understands, and I agree:


agrees to fully abide by all safety precautions prescribed in HOL yes
Science labs for laboratory work and for the use of HOL Science kits.
Accordingly, I recognize the inherent hazards associated with science
experimentation; I will always experiment in a safe and prudent
manner; and I unconditionally accept full and complete responsibility
for any and all liability related to my purchase and/or use of a science
HOL Science kit or any other science products or materials provided by
Hands-On Labs, INC.

Competency Review

1. Chemicals in a lab kit may potentially cause _____ if mishandled or consumed.

burns

serious illness

death

All of the above

2. When conducting experiments that include vigorous exercise, consult a


physician first or ask a partner to assist in participating if you are unable to do
so.

True

False

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3. The _____ should be contacted immediately if you or anyone accidentally
consumes or comes in contact with a potentially toxic substance.

National Chemical Toxicity Center

National Poison Control Center

American Poison Chemical Society

American Toxic Chemical Center

4. At the conclusion of experiments involving growing bacterial cultures, _____


should be added to the plates or tubes and everything should be soaked for
_____.

pure acid; 1 hour

a base; 30 minutes

pure bleach; 2 hours 

pure bleach; 15 minutes

5. When working with acids, always _____ to avoid chemical splattering.

add acid to water

add water to acid

6. Acid spills can be neutralized by adding _____.

water

baking soda

more acid

distilled water 

All of the above

7. Graduated cylinders and volumetric flasks are designed to be heated.

True

False

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8. A _____ can be used to douse a fire.

fire extinguisher

safety shower

fire blanket

fire blanket and fire extinguisher

All of the above

9. Chemicals may be returned to their containers after they have been


dispensed.

True

False

10. Normal eyeglasses may be worn to substitute for safety goggles.

True

False

11. A _____ expels noxious fumes from a laboratory.

fire blanket

fume hood

spill containment kit

All of the above

12. A sink faucet or hand-held shower wand are appropriate substitutes for an
eyewash station.

True

False

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13. A Safety Data Sheet provides basic information about _____.

health effects 

toxicity

physical data

safe disposal

health effects and toxicity

All of the above

14. First-aid kits are best substituted by bandages and alcohol.

True

False

Extension Questions

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1. Use the Internet to look up the SDS for hydrochloric acid and answer the following
questions:

a. List the potential acute health effects.

b. List the potential chronic health effects.

c. Identify the first aid measures for ingestion.

d. Record the flammability of the product.

e. Identify 3 chemicals that produce a potentially dangerous reaction with hydrochloric


acid.

f. Describe how to handle small spills.

g. List the personal protection when working with  the chemical.

a. List the potential acute health effects.


Eye: irreversible eye injury, irritation, and severe burns
Skin: severe burns and ulceration
Ingestion: severe digestive tract burns with abdominal pain, vomiting, and possible death. It could
also cause corrosion and permanent tissue damage to the esophagus and digestive tract
Inhalation: Severe irritation to the respiratory tract with symptoms like sore throat, coughing, SOB,
delayed lung edema, and corrosive action to mucous membranes
b. List the potential chronic health effects.
Dermatitis
Erosion of the teeth
Bleeding of nose and gums
Chronic bronchitis
Chronic gastritis

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