Untitled Storyboard
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- Пързалка: 1
- Argg of course it is!
- Omg is that all real gold!!
- Пързалка: 2
- Few days prior....
- Пързалка: 3
- Let me take these pennies out of here..
- yes they are perfectly silver!
- Пързалка: 4
- Lets rinse this off and then I'll heat it up
- Пързалка: 5
- ARGG it is gold!!
- Пързалка: 6
- Argg me gold looks perfect!
- Пързалка: 7
- No one will be able to tell that me gold is fake
- Пързалка: 8
- Cu + Zn
- Z
- Zn
- Chemistry of a golden coin after lab
- Пързалка: 10
- Zn
- Cu
- Zn
- Silver color
- When the copper is placed into hot sodium hydroxide containing Zinc, The Zinc reacts with the solution to form Zinc Ions. The Zinc Ions gain electrons and are reduce back to solid zinc metal. This zinc metal plates onto the outside of the coin, which forms a silver coating.
- Пързалка: 11
- Zn
- ,
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- Cu
- ,
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- Zn
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- Silver color that was washed and dried
- The penny was then carefully rinsed so when it would eventually be burned there was no issues when creating the solid gold color and so that there was no leftover Sodium Hydroxide or dissolved zinc compounds from the surface.
- Пързалка: 12
- Cu + Zn
- Z
- Zn
- Color gold
- When the Zinc-coated penny is heated in the flame, the heat allows the Zinc atoms on the surface to move and mix with the copper atoms beneath. The mix doesn't change the element into real gold, but instead forms brass, a Copper-Zinc alloy. Brass has a natural golden color, so the penny looks like shinny gold after heating because the surface of the penny is brass instead of the pure zinc plating.
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