Y7 Using the Bunsen Burner

1. Why must students wear safety goggles when using a Bunsen burner?

• 1. To look like a scientist

• 1. To protect their eyes from heat and flames

• 1. To see the flame more clearly

• 1. To keep their glasses clean

2. What is the yellow flame on a Bunsen burner called?

• 2. Roaring flame

• 2. Safety flame

• 2. Invisible flame

• 2. Heating flame

3. What is the blue flame on a Bunsen burner used for?

• 3. Keeping the gas safe

• 3. Cooling experiments

• 3. Heating substances

• 3. Showing the burner is on

4. Before lighting a Bunsen burner, what must you always do?

• 4. Leave the air hole open

• 4. Close the air hole

• 4. Switch on the gas

• 4. Wave your hand over the burner

5. What should you do if the flame goes out suddenly?

• 5. Call the teacher and leave the gas on

• 5. Try lighting it again quickly

• 5. 5. Move the Bunsen to another bench

• 5. Turn the gas tap off immediately

6. Which of these is the safest way to light a Bunsen burner?

• 6. Hold a lit splint over the burner, then turn on the gas

• 6. Turn on the gas and immediately light it with a splint

• 6. Light a splint at the teachers desk, turn on the gas, and bring the splint to the side of the burner

• 6. Use another Bunsen flame to light it

7. The yellow flame is easy to see and is called the ______ flame.

8. The blue flame is (hotter / colder) than the yellow flame.

9. The Bunsen burner must always be placed on a ______ mat.

10. Never leave a Bunsen burner ______ when the gas tap is on.