How To Light a Bunsen Burner

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How To Light a Bunsen Burner _LLmE.

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Presentation transcript:

How To Light a Bunsen Burner http://www.youtube.com/watch?v=8G_YpI_LLmE

Bunsen burner History Robert Wihelm Bunsen created the Bunsen burner in 1855. http://www.enchantedlearning.com/inventors/page/b/bunsen.shtml

The Bunsen burner is used frequently in the laboratory as a source of heat. This burner is designed so that gaseous fuel may be mixed with the correct amount of air to yield the maximum amount of heat. In order to use this burner properly and safely, it is essential that you understand its construction and the adjustments that can be made.

The principal parts of the burner are: needle valve collar barrel The quantity of gas admitted to the burner is controlled by the needle valve, while the air needed for combustion is admitted at the small opening around the bottom of the barrel call air intake openings. The air is controlled by turning the collar so as to make the air holes larger or smaller.

1. Always open the desk outlet valve fully and regulate the gas supply to the burner by the needle valve. 2. Always extinguish your burner by turning off the desk outlet valve (and then closing the needle valve and barrel.) 3. If there is an accident always shut off the desk outlet valve immediately.

4. Always light burner in open space on lab counter. 5. After you have adjusted it for the flame needed move it into position. One person in lab group is always responsible for maintaining the burner and flame.

STEPS TO LIGHT BUNSEN BURNER: Check connections to burner and desk outlet valve. Close needle valve and collar. Open desk outlet valve fully. Open needle valve 1 turn. Use the spark lighter to light the flame. Adjust collar and needle valve till you see a blue flame.

Label the parts of the Bunsen Burner Barrel Gas Valve Hose Collar Air Intake Holes Base Needle Valve

Check out this link… http://www.scivee.tv/node/4299

Assignment Create a Pocket Guide to the Bunsen Burner. Include the following History of the Bunsen burner Diagram of the Bunsen burner with labels Information on the correct type of flame The steps to lighting a Bunsen burner 3 Do’s and 3 Don'ts of using the Bunsen burner