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Introduction and Lab safety

Introduction and Lab safety. Lesson 1 January 19 th , 2011. How to light a Bunsen burner. Step 1 The first step is to  check for safety  - long hair tied back, safety glasses on, books and papers away from the flame, apparatus set up not too close to the edge of the table.

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Introduction and Lab safety

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  1. Introduction and Lab safety Lesson 1 January 19th, 2011

  2. How to light a Bunsen burner • Step 1 • The first step is to check for safety - long hair tied back, safety glasses on, books and papers away from the flame, apparatus set up not too close to the edge of the table...

  3. How to light a Bunsen burner Step 2 • The second step is to look at the holes.  Check that the holes are closed.  The holes can be adjusted to let in more or less air by turning the collar(see photos below). Open Closed

  4. How to light a Bunsen burner • Step 3 • Hold the sparker in one hand above the burner and turn on the gas with the other. • As soon as you turn the gas on start sparking. • NOTE: some have an extra gas valve to them. Look before you light it.

  5. How to light a Bunsen burner • Step 4 • Adjust the flame by turning the collar so that you have the appropriate flame for the experiment (usually the medium blue flame). 

  6. How to light a Bunsen burner • Step 5 • During the experiment, stay vigilant so that if a problem occurs, you are ready to turn off the flame quickly.  This means that you should not leave your bench unattended. 

  7. Now its your turn • Everyone in the class should try

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