INTRODUCTION
SCIENTIFIC INQUIRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Practice with the flint striker
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Open the Collar
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Close the Collar
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Turn on the Gas
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Detailed explanation-1: -Remove all papers, notebooks, combustible materials, and excess chemicals from the area. Tie-back any long hair, dangling jewelry, or loose clothing. Use correct tubing (butyl rubber hose). Inspect hose for cracks, holes, pinch points, or any defect and replace if necessary.
Detailed explanation-2: -Close the air hole before you attempt to light the burner, otherwise you will find it difficult to light. When the Bunsen lights, as the air is restricted, the gas burns with a yellow, luminous flame. When not heating, always leave the Bunsen with the air hole closed.
Detailed explanation-3: -Extinguishing the Burner If your flame is hot and blue, twist the collar to close off the air flow and produce a yellow safety flame. Close the needle valve by turning it clockwise. Close the valve completely to cut off the gas supply. The flame should go out, and the valve will then be properly set for the next use.
Detailed explanation-4: -Close the air vents on the Bunsen burner. When lit it will provide a yellow flame. Use a striker or long-reach lighter to ignite the burner. Adjust the air supply by turning the metal collar to get a blue flame.