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- 1. Multiple Choice
Air hole closed means __________ safety flame and air hole open means _________ heating flame.
Yellow, blue
Blue, yellow
Blue, orange
Yellow, green
- 2. Multiple Choice
During an experiment, a bunsen burner is placed on:
Gauze mat
The laboratory bench
A heatproof mat
Tripod
- 3. Multiple Choice
The different parts of a bunsen burner include:
Barrel, collar, air hole, gas hose and base
Barrel, collar, air vent, gase hose and base
Barrel, collar, air vent, gas hose and bottom
Barrel, neck, air hole, gas hose and base
- 4. Multiple Choice
When heating a test tube you.....
Wear safety goggles, use a test tube holder and hold the test tube away from you
Wear safety goggles, use tongs and hold the test tube close to you
Wear safety goggles, use a test tube holder and make sure the flame is only yellow
Wear safety goggles, use tongs and hold the test tube away from you
- 5. Multiple Choice
When you first light a bunsen burner, the flame should be:
Yellow
Blue
Either
Non existent. You shouldn't be using a bunsen burner to light things in the lab
- 6. Multiple Choice
A gauze mat.....
Protects the tripod
Distributes heat evenly
Protects the laboratory bench
Wraps around a test tube to cool it down
- 7. Multiple Choice
When you lift a bunsen burner, you hold it from the:
Barrel
Gas hose
Base
Collar
- 8. Multiple Choice
The hottest part of a flame is _________ degrees celsius.
150
15
15000
1500
- 9. Multiple Choice
First steps to using a bunsen burner:
Place on heat proof mat, connect gas hose to a gas tap and make sure the air hole is closed
Place on heat proof mat, connect gas hose to a gas tap and make sure the air hole is open
Place on heat proof mat, connect gas hose to a gas tap and light the bunsen burner
Place on the bench, connect gas hose to a gas tap and make sure the air hole is open
- 10. Multiple Choice
A mixture of __________ and __________ burn at the top of the barrel to produce a flame
Air, carbon dioxide
Gas, carbon dioxide
Gas, air
Air, helium
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