Practical-Bunsen Burner

A Bunsen Burner is a device used in the laboratory for heating activities.

Parts	Functions
Air Holes	To allow air to enter the burner
Barrel	To raise the flame to a suitable height for heating/ burning
Base	To support the burner and make it more stable
Collar	To control the amount of air entering the burner
Gas Intake tube	To allow the gas from the gas supply to rush into the burner
Gas Tap	To control the amount of gas supplied to the burner

Aim: Find out which part of the *non-luminous flame is the hottest.

Procedure of experiment:

1. Light the bunsen burner with a lighter adjusting the air holes to get non-luminous flame.
2. Us the metal tongs to grab hold of the thin wires.
3. Timing with the stopwatch, put the metal thin wires using the metal tongs form 1 minute at the tip of the inner blue flame.
4. Repeat the step 2 and 3 for the inner blue flame and the tip of the outer blue flame.
5. Compare the three wires to observe which wire has melted the most  and the colour change of the wires.

Observation

Part of the flame	Observation
Inner blue	The copper wire turned slightly red and melted slightly.
Tip of inner blue	The copper wire glowed brightly in red and it was melted almost halfway through
Tip of outer blue	The copper wire turned quite red and ¼ of  it was melted

Conclusion: The tip of the inner blue flame is the hottest part of the Bunsen flame.

Bunsen burner

Non-luminous flame

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