Sunday 26 June 2011

Lab lesson 2 (IP2)!

So in this lesson, we learnt about the anatomy of a bunsen burner.

so, basically a bunsen burner consists of a


  • barrel and collar
  • an air-hole
  • a gas jet
  • a base
  • a gas top
Lighting the bunsen burner.

Seemed kind of scary at first, flames might just like EXPLODE and eat you up. Nah, just joking but still kind of scary. 


CAUTION !!!!!
Before you light the burner, check to see that you and your partner have taken the following safety precautions against fires: Wear safety goggles, aprons, and gloves.  Confine long hair and loose clothing: Tie long hair at the back of the head and away from the front of the face, roll up long sleeves on shirts, blouses, and sweaters away from the wrists.  You should also know the locations of fire extinguishers,f ireblankets,safety showers, and sand buckets and how to use them in case of a fire.
Figure 1-1
2.   In lighting the burner, partially close the ports at the base of the barrel, turn the gas full on, hold the sparker about 5 cm above the top of the burner, and proceed to light.  The gas flow may then be regulated by adjusting the gas valve until the flame has the desired height.  If a very low flame is needed, remember that the ports should be partially closed when the gas pressure is reduced.  Otherwise the flame may burn inside the base of the barrel.  When improperly burning in this way, the barrel will get very hot, and the flame will produce a poisonous gas, carbon monoxide.
CAUTION!!!! (again)
Carbon monoxide is a poisonous gas. If the flame is burning inside the base
of the barrel, immediately turn off the gas at the gas valve.  Do not touch
the barrel, for it is extremely hot!  Allow the barrel of the burner to cool off.
Reflection:

For this laboratory lesson, we have learnt more about the Anatomy of a Bunsen Burner and what we should do will lighting the burner. At first, being mischievous, despite the teacher's warnings, I wanted to see what a strike back looked like, however, it seemed like I was not the only one. Another one of my classmates also did it and I saw that it was no laughing matter :/. I previously had a little phoebia of setting things on fire but this laboratory lesson taught me how to use the lighter safely.
The precautions that needed to be heeded were also learnt by me in this labarotary lesson..

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