Lesson 6 The bunsen burner

By the end of the lesson ALL students should be able to: Decide how to light a bunsen burner By the end of the lesson MOST students should be able to: Select the correct burner settings By the end of the lesson SOME students should be able to: Plan how to work safely with a flame Year 10

Robert Bunsen's 200th Birthday was celebrated on March 31 st Robert Bunsen developed the Bunsen burner and has been placed as a Google Doodle. March 31 is also observed as Bunsen Burner Day. Mr. Bunsen also discovered caesium and rubidium with Gustav Kirchhoff. He was one of the most successful chemists in Germany during the 1800s. With his laboratory assistant, Peter Desaga, he developed the Bunsen burner, an improvement on the laboratory burners then in use. A bunsen burner produces a single open gas flame, which is used for heating, sterilization, and combustion. ROBERT BUNSEN

Using a Bunsen Burner Air Hole Chimney Flame (Inner Cone) Flame (Outer Cone) Heat Proof Mat Base Rubber tubing

Using a Bunsen Burner Air hole open Air hole half-open Air hole closed Type of Flame When is it used? Diagram of flame Amount of noise Amount of air Amount of heat

Using a Bunsen Burner Air hole open Air hole half-open Air hole closed Type of Flame RoaringBlueOrange (safety) When is it used? Heat thing fastHeat things slow When not being used but we want to leave it on Diagram of flame Amount of noise VERY NOISYnoisy Quiet Amount of air Lotssome little Amount of heat 700 oc 500 oc 300oc