Burns from a Bunsen burner are the most common lab accidents



Yüklə 1 Mb.
tarix29.07.2018
ölçüsü1 Mb.
#59567











Burns from a Bunsen burner are the most common lab accidents

  • Burns from a Bunsen burner are the most common lab accidents

  • Temperatures are very hot and at NO TIME should you PLAY with the flame.

  • Long hair MUST be tied back. Hair is VERY flammable.

  • SAFETY GLASSES MUST be worn at ALL TIMES.



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

  • 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 a teacher.

















Step 1

  • Step 1

  • The first step is to check for safety - lab coat on, 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...



Step 2

  • 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).





Step 3

  • Step 3

  • Wait for the teacher's permission, then light the match.   Some people prefer to turn the gas on and light the match after.  The problem is, if the match breaks or goes out, the gas is leaking out of the tap while you get a new match.



Step 4

  • Step 4

  • Light the Bunsen burner.  When you have a flame from the match, turn on the gas tap.  In some labs, to turn it on, you must first push down, then turn the tap. This is a safety feature so the taps are not accidentally pushed open. Approach the match to the top of the Bunsen burner and it should light.





Step 5

  • Step 5

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



Step 6

  • 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. 





FLAMMABLE: means to burn easily

  • FLAMMABLE: means to burn easily

  • VIGILANT: stay alert, be watchful,

  • LUMINOUS: able to be seen, visible

  • NON-LUMINOUS: cannot be seen, invisible



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

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

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

  • http:/ch/emscape.santafe.cc.fl.us/chemscape/catofp/bunsbur/bunsbur2.htm

  • http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA5/MAIN/1ORGANIC/ORG01/TRAM01/B/0041721/THUMBS.HTM



Yüklə 1 Mb.

Dostları ilə paylaş:




Verilənlər bazası müəlliflik hüququ ilə müdafiə olunur ©genderi.org 2024
rəhbərliyinə müraciət

    Ana səhifə