Robert Bunsen
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Robert Bunsen “He created the Bunsen burner for use in flame tests of various metals and salts: its non-luminous flame did not interfere with the colored flame given off by the test material.”(3). Parts of the burner. The Gas tap and the Bunsen burner.

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Robert Bunsen

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Robert bunsen

Robert Bunsen

“He created the Bunsen burner for use in flame tests of various metals and salts: its non-luminous flame did not interfere with the colored flame given off by the test material.”(3)


Parts of the burner

Parts of the burner


The gas tap and the bunsen burner

The Gas tap and the Bunsen burner.

  • The gas tap should be in the off position before you place the tube on to the gas jet.

  • The Bunsen burner should be off when you start.


Robert bunsen

  • “In order to have a fire, there must be three elements:

  • Fuel -- something which will burn

  • Heat -- enough to make the fuel burn

  • Air -- more specifically, oxygen”(1)


Robert bunsen

Bunsen burners may be adjusted from a highly luminous flame (left) to a non-luminous flame to the (right).The luminous flame is cooler than the non-luminous flame, which is very hot.


Luminous bunsen flame

Luminous Bunsen Flame

  • Yellow

  • Silent

  • Visible

  • Cool

  • Sooty

  • Safe

The "coolest" flame is a yellow / orange color. 

It is never used to heat anything, only to show that the Bunsen burner is on.  It is called the safety flame.

  • The Air-hole is closed (1)


Robert bunsen

“The medium flame, also called the blue flame or the invisible flame is difficult to see in a well-lit room.  It is the most commonly used flame.” (1)


Robert bunsen

“Roaring Flame: Non- Luminous”

“The hottest flame is called the roaring blue flame.  It is characterized by a light blue triangle in the middle and it is the only flame of the 3 which makes a noise.”

  • This flame is:

  • Blue

  • Noisy

  • Non-luminous

  • Very hot

  • Clean

  • Dangerous if left unattended

The Air-hole is OPEN (1)


Regions of the flame

Regions of the flame


How hot is a burner flame not easy to answer and not what are focus will be today

How hot is a burner flame? Not easy to answer and not what are focus will be today.

  • http://www.avogadro-lab-supply.com/content.php?content_id=1003

  • The link above will discuss the combustion reaction, (shown below) and the ranges of temperature the flame could fall into.

    C3H8 +  5O2  ⇒ 3CO2(g) + 4H2O(g)   -2020 kJ/mol


Lighting the bunsen burner

Lighting the Bunsen Burner

Step 1

  • Goggle and lab apron on.

  • Long hair tied back.

  • No lose clothing.

  • Keep lab area clean

    • Make sure that NO FLAMMABLE objects are near the lit Bunsen Burner.

  • If you burn yourself, place the burned area under cold water and tell your teacher.


Robert bunsen

Step 2

  •   Check that the holes are closed. 

    • The holes can be adjusted to let in more or less air by turning the collar. (1)

      OpenClosed


Sparker

Sparker

Sparkers are used to safely light a Bunsen burner. You may need to practice before you turn on the gas.


Robert bunsen

Step 3

  • Wait for the teacher's permission, to start.

  • Practice using the sparker before you turn on the gas. Do not over use so we do not waste the flint.


Robert bunsen

Step 4

  • Light the Bunsen burner.

  • When you have mastered the sparker, turn on the gas tap. 

  • Approach the to the top of the Bunsen burner then create a spark.

  • If you are having trouble lighting the burner then turn of the gas. Practice with then sparker and try again. The problem is, the gas is leaking out of the tap while you are trying to create a spark.


Robert bunsen

Step 5

  • “Adjust the flame by turning the collar so that you have the appropriate flame for the experiment (usually the medium blue flame).”(1) 


Robert bunsen

Step 6

  • “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 table unattended.”(1)


Things to know what it is where it is what is does

Bunsen burner

Gas hose

Collar

Barrel

Air hole

Metal Base

Gas tap

Fuel

Heat

Air

Luminous

Non-luminous

Hottest part of the flame

Coolest part of the flame

Things to KnowWhat it is. Where it is. What is does.


Bibiliography

Bibiliography

  • "Powerpoint on How to Light a Bunsen Burner - Google Search." Powerpoint on How to Light a Bunsen Burner - Google Search. N.p., n.d. Web. 14 Sept. 2014.

  • "Temperature of a Bunsen Burner Flame - Google Search." Temperature of a Bunsen Burner Flame - Google Search. N.p., n.d. Web. 14 Sept. 2014.

  • "Robert Bunsen and Gustav Kirchhoff | Chemical Heritage Foundation." Robert Bunsen and Gustav Kirchhoff | Chemical Heritage Foundation. N.p., n.d. Web. 14 Sept. 2014.


Images

Images

  • http://www.nndb.com/people/900/000095615/bunsen-1-sized.jpg

  • http://upload.wikimedia.org/wikipedia/commons/0/08/Bunsen_burner_flame_types.jpg

  • http://www.mr-damon.com/experiments/bunsen/lighting.htm

  • http://dbhs.wvusd.k12.ca.us/Electrons/Bunsen-Burner.html


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