Lower Secondary: Bunsen Burner

Air hole closed means __________ safety flame and air hole open means _________ heating flame.

• Yellow, Blue

• Blue, Yellow

• Blue, Orange

• Yellow, Green

Which part of the Bunsen flame is the hottest?

• A

• B

• C

• D

The gas should be turned on ____________ lighting the match.

• before

• after

• during

What is the purpose of the air holes (part C)?

• controls the amount of air entering the barrel

• raises the height of the flame

• allows air and gas to mix properly

• allows air to enter the barrel

First steps to using a bunsen burner:

• Connect gas hose to a gas tap and make sure the air hole is closed

• Connect gas hose to a gas tap and make sure the air hole is open

• Connect gas hose to a gas tap and light the bunsen burner

• Connect gas hose to a gas tap and make sure the gas tap is closed

When lighting a bunsen burner, the

• collar must be open, opening the air holes

• collar must be shut, closing the air holes

• collar must be half open, slightly opening the air holes

• it doesn't matter what position the collar is in

What is E:

• gas hose

• collar

• barrel

• air hole

• base

What is D:

• gas hose

• collar

• barrel

• air hole

• base

What is C:

• gas hose

• collar

• barrel

• air hole

• base

What is B:

• gas hose

• collar

• barrel

• air hole

• base