Name: Santan, Dece Andrea O.
Date Performed: 9/29/2022
BS Civil Engineering/3rd Year
Date Submitted: 9/29/2022
Group No: Group 1
Points: Activity: /50 Evaluation: /50
Learning Activity No. 1
COMMON LABORATORY APPARATUSES AND ITS USES
LEARNING OBJECTIVES: At the end of this activity, students are expected to:
1. Identify the common laboratory apparatuses.
2. Familiarize with the different uses of the common laboratory apparatuses. 3. Appreciate the
importance of the common laboratory apparatuses in performing experiment.
DISCUSSION:
Laboratories are places where scientists and medical professionals conduct studies or perform
other work relevant to their fields. Students need to know about the common laboratory
apparatus and their uses since laboratory usually contain specialized equipment to help with such
work. Some of the most common kinds of laboratory equipment can magnify, measure, ignite,
weigh or hold various substances for a variety of purposes. Science laboratory equipment will
allow students to interact directly with the data that is gathered. They will be getting a first-hand
learning experience by performing different experiments on their own. Students make use of the
models and then understand the different scientific concepts and theories.
LEARNING RESOURCES:
1. Graduated cylinders 11. Evaporating dish 21. Test tube rack
2. Beakers 12. Thermometer 22. Suction bulb
3. Test tubes 13. Iron clamp 23. Bunsen burner
4. Erlenmeyer flasks 14. Iron stand 24. Alcohol lamp
5. Watch glass 15. Hot plate 25. Water bath
6. Crucible tong 16. Wire gauze 26. Wash Bottle
7. Pipette 17. Test tube brush 27. Balance
8. Dropper 18. Triangular tripod 28. pH meter
9. Funnel 19. Test tube holder 29. Centrifuge
10. Stirring rod 20. Rubber corks 30. Microscope
LEARNING CONTENT:
I. PROCEDURES
A. The Common Laboratory Apparatuses
1. Identity the common laboratory apparatuses given/assigned by your
instructors. 2. Familiarize its uses.
3. Illustrate properly.
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II. DATA AND RESULTS: (40 points)
A. The Common Laboratory Apparatuses
Name Uses Illustration
1. Graduated cylinders a piece of laboratory
apparatus that measures the
volume of liquids,
chemicals, or solutions
They are created specifically
to allow for precise
measurements.
Measurements taken with
your eyes must be handled
with care.
2. Beakers Beakers have various uses
due to their high resistance
to heat and cold. They
primarily serve to heat or
mix liquids and to collect
gases in a liquid at times
When you don't need high
precision, you can simply
use them to measure the
volume of a liquid.
3. Test tubes Test tubes are mainly used
for qualitative observation
of biological, biochemical
or chemical reactions.
Their most common
applications in laboratories
are the following containers:
Microorganism culture or
identification, Store bodily fluids or
liquid solutions, thermal solution
and Used as a mixing vessel to
observe reactions
4. Erlenmeyer flasks They are used as distillation
receiving vessels, to hold
different layers in the
extraction,
It is also used for reaction
vessels, to heat solvents for
crystallization, such as
crystallization flasks
5. Watch glass Watch glass is used when a
large surface area is
required for a small amount
of liquid.
A watch glass is a round,
concave glass dish used for
evaporation in chemistry
6. Crucible tong Welded steel tools for lifting
crucibles out of furnaces or
for other items that cannot
be handled with bare hands.
Make it possible for users to
hold hot crucibles, flasks,
evaporating dishes, and
even small beakers.
7. Pipette It can hold each drop of the
substance; a pipette will be
more accurate with the
entire sample.
To transport a measured
volume of liquid
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8. Dropper A device for moving liquids
in small amounts.
A dropper is a type of
pipette that has a small tube
and a vacuum bulb at one
end. It is used to draw liquid
in and then release it one
drop at a time.
9. Funnel Funnel is a labware with a
narrow neck or opening can
be filled with liquids or
fine-grained chemicals
powders with the help of
funnels.
Used for separating solid
substances from solution
10. Stirring rod A stirring rod is a piece of
equipment used in
laboratories to mix liquids
and chemicals.
It direct the liquid into the
funnel with a stirring rod to
stop small amounts of liquid
from running down the
beaker's exterior when the
transfer process is
interrupted.
11. Evaporating dish For the purpose of
producing a concentrated
solution or a solid
precipitate of the dissolved
substance, evaporating
dishes are shallow, open
containers used for the
evaporation of solutions and
supernatant liquids.
12. Thermometer During science experiments,
the boiling point and
freezing point are measured
with a thermometer in the
laboratory.
It is also used to measure
substances' temperature. It
measures temperatures
anywhere from -10 to 110
degrees Celsius.
13. Iron clamp In a laboratory, an
extension-type utility clamp
is attached to a support
stand or ring stand by means
of a clamp holder.
It can also be used to secure
an iron ring or other
attachment to a metal bar or
to join two support rods
together.
14. Iron stand When heating liquids or
mixtures in a flask or
beaker, the iron stand holds
the iron ring in place.
15. Hot plate In the laboratory, hot plates
are frequently used to heat
samples, carry out a variety
of tasks, and carry out
chemical reactions.
Hot plates are conceptually
simple – a flat surface with
heating elements. They do
not produce open flames
and are well suited for oil or
sand bath use.
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16. Wire gauze Help to disperse the heat
and safeguard the glassware.
For glassware to adhere to
the wire gauze, it must have
a flat bottom.
17. Test tube brush A brush for cleaning
Erlenmeyer flasks,
graduated cylinders,
burettes, and other narrow-
mouth laboratory glassware
as well as test tubes.
18. Triangular tripod A three-legged platform
used to support flasks and
beakers is called a
laboratory tripod.
A fluid head is utilized by
tripods. The camera can also
tilt up and down and pan to
the left and right as a result
of this.
19. Test tube holder When a test tube is hot or
should not be touched, it is
used to keep it in place.
20. Rubber corks Rubber stoppers are ideal
for sealing laboratory
glassware that prevents
liquid from entering through
joints or holes.
21. Test tube rack Equipment for holding
multiple test tubes upright at
the same time is called a test
tube rack.
They are most often used
when multiple solutions
need to be used
simultaneously, for safety
reasons, to store test tubes
safely, and to make
transporting multiple tubes
easier.
22. Suction bulb It helps control the flow of
liquid from the dropping
bottle and also serves as a
vacuum source for filling
reagents through a pipette or
Pasteur pipette.
23. Bunsen burner It is used to sterilize objects
at high temperatures,
combust substances, and
heat them.
a laboratory instrument that
makes a flame that is hot,
smokeless, and doesn't
shine.
Page 4
24. Alcohol lamp In a laboratory, an alcohol
lamp is used for heating,
sterilization, and
combustion.
Lab liquor burner is utilized
to create an open fire. It is
an essential wellspring of
intensity when there is
gaseous petrol free in the
lab.
25. Water bath Used for incubating samples
for an extended period of
time at a constant
temperature.
26. Wash Bottle Used to clean a variety of
laboratory glassware,
including round bottom
flasks and test tubes.
To clean laboratory
equipment and glassware.
They are poured over the
tool that needs to be cleaned
after being filled with the
appropriate cleaning liquids.
27. Balance The mass of various objects
can be determined with the
aid of a laboratory balance.
28. pH meter For more precise pH
measurements, an electronic
pH meter is used.
A pH meter is a tool for
measuring the activity of
hydrogen ions in solutions.
29. Centrifuge In many laboratories,
centrifuges are used to
separate fluids, gases, or
liquids by density.
30. Microscope An instrument that is used
to magnify small objects is
called a microscope.
Technical field involving
the use of microscopes to
examine samples and other
objects that cannot be seen
by the naked eye.
III. OBSERVATIONS/INTERPRETATIONS: (5Points)
You can contribute to the prevention or elimination of hazards by becoming familiar with the
laboratory you are working in and always adhering to appropriate safety procedures. In the
unfortunate event that something does go wrong, you will also be aware of the correct procedures
to follow. Before starting an experiment, it's important to be aware of how the equipment in the
laboratory is used. In addition to the aforementioned reasons, being familiar with one's science
equipment will only contribute to the success of an experiment and may aid in error correction.
IV. CONCLUCIONS: (5Points)
Students can actually carry out experiments with the help of science lab equipment rather than just
reading about them. We can observe and complete exciting experiments rather than taking stale
notes. It is frequently simpler to comprehend difficult theories and concepts when learning through
hands-on experience.
We students will be expected to participate in hands-on processes and conduct experiments if we
choose a career in science. Without having carried out a few experiments while in school, making
the transition from studying the sciences to actually using them would be extremely challenging.
As a result, it's critical to provide students with the science lab supplies they need to practice
conducting experiments.
LEARNING REFERENCES
STUDENT LEARNING OUTCOME EVALUATION: (50 points)
1. What glassware are used in measuring volume? (5 points)
Beakers, flasks, burets, and pipets are examples of volumetric glassware used in the
chemistry laboratory to measure the volume of liquids.
2. What glassware provides the most accurate volume? Why? (5 points)
Both pipettes and burettes fall under the category of volumetric glassware and are
extremely accurate at measuring volumes. They are printed with graduations on the outside
and have a cylinder shape.
3. What is a meniscus? Give its importance in reading accurately the volume? (5 points)
When a molecular substance comes into contact with another substance, it forms a
meniscus. A meniscus is caused by adhesion, which is influenced in part by the relatively
high surface tension of water. The water molecules are drawn to the molecules in the glass
beaker's wall.
4. What pieces of equipment and tools are used in heating set-up? (5 points)
The common heating devices used in labs that are mentioned in the table above are Bunsen
burners, hot air ovens, hot plates, heating mantles, muffle furnaces, hot oil baths and
microwave digestion systems.
5. What safety must be remembered when using glassware? (5 points)
Use two hands to bring the glass to your side. Never carry a glass above or under your arm.
When moving large glass sheets, ALWAYS USE TWO team members. Use the right hand
and body position to avoid being in the "line of fire" if something breaks.
6. What safety must be remembered when using measuring devices? (5 points)
Always make an effort to keep your measuring tools safe and clean, away from the standard
hand tools and power tools on your workbench. Gages should generally be kept dry and
cool, but some may also come with more specific instructions. Keep your devices away
from heat sources, like sunlight, and keep the storage area at a comfortable temperature.
7. Differentiate accuracy from precision. (10 points)
Accuracy is the capacity of an instrument to accurately measure a value. To put it another
way, it refers to how close the measured value is to a standard or true value. By taking a
few small readings, accuracy is achieved. The calculation's error is reduced by the small
reading. The precision of a substance is the degree to which two or more measurements are
identical to one another. If you weigh something five times and get 2.1 kg each time, your
measurement is very precise but not always accurate. Accuracy is not dependent on
precision.
Scientists consider error in two ways: with precision and accuracy. The degree to which a
measurement is accurate is referred to as its accuracy. The degree to which two
measurements of the same thing are identical is referred to as precision. Accuracy is not
dependent on precision. This indicates that it is possible to be precise without being precise,
as well as to be precise without being precise. Scientific observations of the highest quality
are precise and accurate.
8. As a future professional, what are importance of having enough knowledge about the
different common laboratory apparatuses? (10 points)
If you plan to work in a laboratory, you will most likely come into contact with a wide
variety of expensive and intricate machines and instruments. You will only be helped by
knowing how to use these tools. This is especially true if you are expected to use them in
your research and testing activities. There are many ways that not knowing what you're
doing can backfire on you.
To gain a deeper comprehension of the material you are studying, it is essential to be able to
correctly interpret the findings of a spectrum analysis or chemical separation. To complete
the research, it is essential to know which printouts or displays contain the most important
information and what that information means. As a future professional these kind of
knowledge will help us with the strand of science because as we all know that science is
everywhere.
