Keep your vampire repellant sparkly

Tuesday, 19 October 2010, 1:00 | Category :
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True, it may not work on Twi­light vam­pires (and you may or may not want it to), but out­side of Stephanie Meyer’s uni­verse, sil­ver is usu­ally con­sid­ered an effec­tive way to keep the vam­pires (and were­wolves) away.

Over time, sil­ver becomes tar­nished and loses some of its shine. This hap­pens when the sil­ver reacts with sul­fur in the air to form sil­ver sul­fide, which is black­ish in color. You can reverse this effect with a sim­ple exper­i­ment using com­mon house­hold mate­ri­als and…chemistry!

In addi­tion to a tar­nished sil­ver object, you will need:

  • a pan deep enough to acco­mo­date the sil­ver object
  • enough alu­minum foil to cover the bot­tom of the pan
  • enough boil­ing water to fill the pan
  • oven mitts
  • bak­ing soda (about 1 Table­spoon per cup of water)

Put the alu­minum foil in place in the bot­tom of the pan. Place the sil­ver object in the pan, on top of the foil.

Once the water is boil­ing, remove it from the heat and add the appro­pri­ate amout of bak­ing soda, depend­ing on how much water you have. Then, care­fully pour the water into the pan (using the oven mitts). Make sure the sil­ver object is cov­ered by the water. It will take at least a few min­utes, depend­ing on how tar­nished the sil­ver object is. If it is very tar­nished, you may have to pour out the bak­ing soda solu­tion, reheat it, and pour it back in.

How does it work?

Sul­fur from the air causes sil­ver to tar­nish when it reacts with the sil­ver and forms sil­ver sul­fide. Sulfer reacts to other met­als in this way as well. Alu­minum is one such metal, and because sulfer has a greater affin­ity for alu­minum than sil­ver, the alu­minum will pull the sul­fide away, leav­ing just sil­ver behind — and thus mak­ing the sil­ver object shiny again.

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