Transcript LAB SAFETY & Equipment

SpongeBob, Patrick, and Gary were thrilled
when Mr. Krabbs told them they were
going to the lab today. Mr. Krabbs warned
them to be careful and reminded them to
follow the safety rules they had learned in
science class. The teacher passed out the
materials and provided each person with
an experiment book.
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SpongeBob and Gary flipped through the book
and decided to test the properties of a
mystery substance. Since the teacher did not
tell them to wear the safety goggles, they left
them on the table. SpongeBob lit the Bunsen
burner and then reached across the flame to
get a test tube from Gary. In the process, he
knocked over a bottle of the mystery
substance and a little bit splashed on Gary.
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SpongeBob poured some of the substance into
a test tube and began to heat it. When it
started to bubble he looked into the test tube
to see what was happening and pointed it
towards Gary so he could see. Gary thought it
smelled weird so he took a deep whiff of it.
He didn’t think it smelled poisonous and
tasted a little bit of the substance. They were
worried about running out of time, so they left
the test tube and materials on the table and
moved to a different station to try another
experiment.
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Patrick didn’t want to waste any time reading the
directions, so he put on some safety goggles and
picked a couple different substances. He tested
them with vinegar (a weak acid) to see what would
happen even though he didn’t have permission to
experiment on his own. He noticed that one of the
substances did not do anything, but the other one
fizzed. He also mixed two substances together to
see what would happen, but didn’t notice anything.
He saw SpongeBob and Gary heating something in
a test tube and decided to do that test. He ran over
to that station and knocked over a couple bottles
that SpongeBob had left open.
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After cleaning up the spills, he read the directions
and found the materials he needed. The only
test tube he could find had a small crack in it,
but he decided to use it anyway. He lit the
Bunsen burner and used tongs to hold the test
tube over the flame. He forgot to move his
notebook away from the flame and almost
caught it on fire.
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Before they could do another experiment,
the bell rang and they rushed to put
everything away. Since they didn’t have
much time, Patrick didn’t clean out his
test tube before putting it in the cabinet.
SpongeBob noticed that he had a small
cut on his finger, but decided he didn’t
have time to tell the teacher about it.
Since they were late, they skipped washing
their hands and hurried to the next class.
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Things to remember:
After completing an experiment, all chemical
wastes should be disposed of according to
your instructor’s directions.
 All chemicals in the lab should be considered
dangerous.
 All unauthorized experiments are prohibited.
 Approved eye protection devices (such as
goggles) are worn in the laboratory any time
chemicals, heat or glassware are used.
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Things to remember
Chipped or cracked glassware should
be immediately reported to the teacher
and thrown away.
 Horseplay or practical jokes in the
laboratory are always against the rules.
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Things to remember:
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If a lab experiment is not completed, you
should discuss the issue with your instructor.
If a laboratory fire erupts, immediately notify
your instructor.
If a piece of equipment is not working
properly, stop, turn it off, and tell the science
instructor.
If an acid or any chemical is splashed on your
skin, wash at once with plenty of water.
If you do not understand a direction or part of
a lab procedure, you should ask the teacher.
Things to remember:
 If
you wear contact lenses in the school
laboratory, advise your science
instructor.
 In a laboratory, the following should not
be worn loose clothing, dangling jewelry,
or sandals.
Things to Remember
 Laboratory
work should only be
started on the teacher signal.
 Long hair in the laboratory must be
tied back or kept entirely out of the
way with a hair band, hairpins, or
other confining device.
Things to remember:
 Never
remove chemicals or other
equipment from the laboratory.
 Personal eyeglasses do not provide
as much protection as safety
glasses.
Things to Remember
 Read
all procedures thoroughly
before entering the laboratory.
 The following footwear is best in the
laboratory closed-toed shoes.
 Wash your hands thoroughly with
soap and water.
Things to remember
 When
gathering glassware and
equipment for an experiment, you
should read all directions carefully to
know what equipment is necessary,
examine all glassware to check for chips
or cracks, and clean any glassware that
appears dirty.
Things to Remember
 When
you finish working with
chemicals, biological specimens, and
other lab substances, always dispose
of them as instructed.
 Work areas should be kept clean and
tidy.
Things to Remember
 Do
not return unused chemicals to
their original containers.
 When trying to add tubing into a
rubber stopper it is best done by
lubricating the tubing with water or
glycerin, using a towel or cotton
gloves for protection, and twisting the
tubing and stopper carefully
Lab Equipment
Lab Equipment
Your lab equipment should:
1. Be CLEAN before using it.
2. Be CHECKED (if glassware for cracks or broken
edges– discard anything damaged.
3. Be washed, dried, and carefully stored in the
proper place AFTER using it.
Beaker
Beakers hold
and/or heat
solids or liquids.
A graduated cylinder
is used to measure
volumes of liquids;
probably your best
everyday measuring
tool,
*NOT to be used for
heating or mixing
chemicals
Graduated Cylinder
The number
on the top
of the
graduated
cylinder will
tell you how
much
volume it
holds
Test Tube
Test tubes are used to mix chemicals, and
also used to heat chemicals in.
Test Tube Holder
A test tube
holder is
useful for
holding a test
tube which is
too hot to
handle with
your hands.
Holding it here will keep your hand as far as
possible from the fire, and prevent you from
squeezing the holder and dropping the tube.
Test Tube Brush
Test tube brushes are
used to clean test
tubes and graduated
cylinders.
Test Tube Rack
Test tube racks are for holding, drying, and
organizing test tubes in a vertical position, and
are located in the side wall cabinets.
Electronic Balance
Place item here to mass
The electronic
balances makes the
mass value very easy
to read.
42.57
“On” button
“Off” button
“Tare” button
Triple Beam Balance
Note the three
beams…
Used to measure mass in grams.
The mass of the object will be the sum of the three
beams.
Read the triple beam balance to the right.
Spring Scales
Spring Scales are used for measuring forces.
They measure in Newtons.
Ruler
We always use the Metric System (also
called the International System) to make
our measurements.
Record your numbers as decimals, not
as fractions.
Examples: 3.5 mm or 6.2 cm
Goggles and Goggle Sterilizer Cabinet
Eyewash Station
Push this handle to turn
on the water – it will
stay on until you pull it
to turn off.
Safety Shower
This is the handle
to pull down to
activate the safety
shower – it will stay
pulled down until it
is pushed back up
to turn it off
Fire Extinguisher
Thermometer
Used to measure heat.
The Chemical Storeroom
Materials you need
will be available to
you in the lab area.
Students are not
allowed in the
storeroom where
chemicals and
glassware are kept.
Glassware Flip Book
Title Page
Page 1- Beaker
Page 2- Graduate Cylinder
Page 3- Test Tube
Page 4- Florence Flask
Page 5- thermometer
Page 6- spring scale
Page 7- triple beam balance