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Method Step 3:

  • place the magneisum of in the Crucible.
  • Place the Crucible on top of the pipe clay triangle.
  • Turn the bunsen burner on to a safe flame by moving the metal to close the hole in the bunsen burner.
  • When you turned on the gas, open the hole and start the experiment.
  • Cut a piece of magnesium about 10-15 cm long
  • Take a piece of Magnesium ribbon and Weigh it. That will be [mass 1]
  • After the experiment, weigh magnesium [what is left of it]
  • put it into table to see the difference

Video^^

Method Step 2:

Method Step 1:

  • Take a heat resistant mat and place it on the desk.
  • On top of that, in the middle place a bunsen burner and plug it into the generator of gas.
  • On top of the mat also place a tripod as shown on the picture.
  • Take the pipe clay triangle and place it on top of the tripod, right in the middle.

Results

Equipment:

  • as you have seen from the video;
  • After the expereiment, the magnesium ribbon was burned with oxygen giving a compound of magnesium oxide [ 2MgO ].
  • This is a highly exothermic reaction, giving off intense heat and light.
  • the colour goes from shiny silver to a white-silver substance
  • Magnesium ribbon(10-15cm)
  • Eye protection
  • Crucible with lid
  • Tongs
  • Tripod
  • Heat resistant mat
  • Balance (2 d.p.)
  • Pipe clay triangle
  • Bunsen burner

Health & Safety

  • Wear goggles..
  • Do not look directly at the light emitted from the metal, It might cuase temporary loss of sight.
  • Keep away from combustible materials. (combustible means catch on fire or burn easily)

Aims:

Our aim for this experiment is to see the differences of magnesium after the reaction with oxygen when burnt (oxidation). For example: the colour change, the mass, and the shape.

magnesium + oxygen = magnesium oxide

Mg (s) + O2 (g) = MgO (s)

Links

http://www.rsc.org/learn-chemistry/resource/res00000718/the-change-in-mass-when-magnesium-burns?cmpid=CMP00005934

http://chemwiki.ucdavis.edu/Under_Construction/Demonstrations/Burning_Magnesium

http://www4.ncsu.edu/~franzen/public_html/Outreach/Oxidation_Demonstration.pdf

http://lecturedemos.chem.umass.edu/chemReactions4_1.html

http://www.bbc.co.uk/education/guides/zqd2mp3/revision/4

Magnesium in reaction with Oxygen

By: Bebe, Vinni and Nika

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