Table 2.
Identified Parts and its Function of a Laboratory Burner
Parts Function
1. Nozzle - is the part where the flame comes out
2. Barrel - where gas and air mixed up
3. Collar - adjust the amount of the oxygen
3. Air Holes - allows air enter into the barrel
4. Gas Intake - allows gas to enter into the barrel
5. Gas Valve - control the amount of gas
6. Stand or Base - use to support the burner
Table 1. Result and Observation in the Laboratory Burner
Observation
1. When the gas regulator is turned clockwise The gas regulator was opened when turned
while the burner is still unlighted. clockwise and the gas flows outside to escape.
2. When the gas regulator is turned The gas regulator were closed when it turned
counterclockwise while the burner is still counterclockwise and the gas just stay inside.
unlighted.
3. Color of the flame when air holes are Yellow in color.
closed.
4. When evaporating dish held over the flame There are black materials found called soot in
(air holes are closed). the exposed portion of the evaporating dish.
5. Color of the flame with little air. Yellow in color.
6. Color of the flame with enough air. Blue in color.
7. When evaporating dish held over the flame There’s no soot in the exposed portion of the
resulting from enough air. evaporating dish.
8.When the powdered charcoal was sprayed There were yellow sparks produced after it
over the flame with enough air. sprayed in the luminous flame.
9. When an unlighted matchstick is placed on The ignition of the matchstick was delayed.
the inner zone of the flame.
10. When a lighted matchstick is placed on the The tip of the glass tube produce a yellow
other end of the glass tubing. spark.
11. The scorched cardboard showing the different regions of heat.
Illustration:
IV. Discussion
In the gathered data projected above it has been identified the different parts of the
laboratory burner together with its function as well as its operation and principles. In the
illustration 1 projected the distinctive part of a laboratory burner in corresponds in the table 1.
The identified parts of the laboratory burner namely: the nozzle in which the flame comes out,
barrel in which the gas and air mixed up, collar which use to adjust the amount of the oxygen, air
holes that allows the air to enter into the barrel, gas intake that allows gas to enter into the
barrel, gas valve or gas regulator controls the amount of gas and the stand or the base which is
used to support the burner.
As the gas valve or gas regulator turned clockwise the gas regulator was turned open and
allow the gas to escape. The unlighted match was introduced for about 10 cm below the nozzle
to avoid unexpected flame or explosion. Raise the lighted match until the gaseous mixture
flowing from the burner. As the burner get lighted the above flame produced is called the
luminous flame or incomplete combustion (2CH4 + 3O2 CO2 + 4H2O + C) with a bright
yellow flame which depicts that there’s no enough presence of air. Actually it is the coolest flame
obtainable from the burner. Under these conditions the methane is not completely combusted
(or oxidized) resulting in the formation of some soot that’s why as the portion of an evaporating
dish were exposed there’s a black material can be found which is the soot. When the collar with
air holes was gradually screw upward it will tend to open the air holes that allows the air enter
into the barrel, the flame was slowly turned from yellow color into blue color flame. When the
burners begin to roar it was adjusted by screwing the collar down until the roaring sound of the
flame ceases because too much air will make the flame rustle or roar, with a tendency to snap
out. The flame above that produced with enough presence of oxygen is a non- luminous flame
or complete combustion (CH4 + 2O2 CO2 + 2H2O + energy) which is blue in color. It is
much higher temperature compare to luminous flame. In this relatively hot flame methane
undergoes complete combustion (or oxidation) forming only the expected products, carbon
dioxide and water; there are no carbon particles so the flame is nonluminous that’s why when
the side of evaporating dish were exposed there’s no soot found in the portion were get exposed.
When the powdered charcoal was sprayed over the flame with enough air, there were yellow
sparks produced after it sprayed in the luminous flame. When an unlighted matchstick was
placed on the inner zone or the cool inner zone of the flame, the ignition of the matchstick was
delayed whereas when the unlighted match stick was introduced in the inner tip zone the match
was immediately ignited, depicts that it was the hottest part of the flame. A glass tubing was
introduced, the tip of a glass tubing was placed in the non- luminous flame while the other tip
was placed with a lighted match stick as the result the tip of the glass tubing where exposed on
the flame produce a bright yellow spark. To identify and characterized the different region of a
flame, a thoroughly wet piece of cardboard was introduced resting against the top of the burner
until it begins to char. From the scorched portions of the card board the different region of flame
was identified- the outer zone, inner zone, the tip inner zone which identified as the hottest point
of the flame and the cool inner zone which is the coolest part of the flame.
V. Conclusion
In line with the objective - to study the different parts and functions of each part of the
laboratory burner. Therefore, we conclude that this exercise was enable the students to operate
actually laboratory burner applying the different procedure given and able the students to
identify and knew the different function of a laboratory burner namely: the nozzle, barrel, collar,
air holes, gas intake, gas valve, and the stand. In terms of the operation principle of a laboratory
burner. We can conclude as the gas regulator turn clockwise it will open otherwise if we turn
counterclockwise it will turn close. If we screw upward the collar, the air holes tend to open
otherwise if we screw downward it will tend to close. In contrast we can conclude that the
laboratory burner produced two different types of flame- the luminous flame or incomplete
combustion (2CH4 + 3O2 CO2 + 4H2O + C) with a yellow color flame that depicts that
there’s no enough presence of oxygen and a non- luminous flame or complete combustion (CH4
+ 2O2 CO2 + 2H2O + energy) with blue color flame that depicts that there was enough
presence of oxygen with a higher temperature compare to the luminous flame. We can definitely
conclude based on what we observed in the scorched cardboard that shows the different region
of heat the outer zone, inner zone, the tip inner zone which identified as the hottest point of the
flame while the cool inner zone which is the coolest part of the flame.
VI. References
https://www.google.com/search?biw=1366&bih=646&ei=5HsDXIyRMsXVvgT5oqPgDA&
q=PRINCIPLE+OF+bunsen+burner&oq=PRINCIPLE+OF+bunsen+burner&gs
https://www.britannica.com/science/Bunsen-burner
https://en.wikipedia.org/wiki/Bunsen_burner
https://www.quora.com/What-is-the-temperature-of-the-blue-flame-on-the-Bunsen-
burner
https://study.com/academy/lesson/bunsen-burner-parts-function-diagram.html
