Bunsen Burner – Lighting and Adjustment (Fill in the Blank)

Fill-in-the-blank flashcards covering gas tap function, air hole effects, flame types, heating suggestions, strike back, lighting steps, and Bunsen burner components.

The gas tap controls the supply of gas hence the size of the .

flame

Open the air hole slowly until the flame changes from to non-luminous.

non-luminous

The air hole controls the air supply, hence the of the flame and whether it is luminous or non-luminous.

temperature

When the air hole is closed, burning is .

incomplete

The flame produced when the air hole is closed is yellow and .

luminous

When the air hole is opened, the flame is blue and non-luminous and is very .

hot

This flame is for heating.

suitable

For strong heating, the air hole and gas tap should be open.

fully

For gentle heating, the air hole is partly open and the gas tap adjusted to give a -sized non-luminous flame.

medium

If the gas tap is turned down too much with the air hole fully open, the flame may move down into the and burn at the jet.

barrel

This is called a back and will cause the barrel to become hot.

strike

If this happens, turn off the gas supply immediately. Close the air hole carefully (it may be !).

hot

To light a Bunsen burner, hold a match or lighter near the top of the and turn on the gas tap.

barrel

Close the air hole of the burner to begin lighting.

close

A Bunsen burner is the main source in the chemistry laboratory.

heating

One of the parts of a Bunsen burner listed is the .

jet

The part that supports the burner and connects to the gas supply is the .

base