why is the statue of liberty green

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How to make copper coins sparkle?

1. Put about a teaspoon of salt into a bowl. 2. Add about 50mls of vinegar and stir to dissolve the salt. 3. Leave the coins in the vinegar and salt solution for 5 minutes. 5. Take them out and compare to other dull copper coins! You now have sparkling copper treasure!

Why are copper coins dull?

The reason copper coins dull in the first place, is because copper reacts with oxygen in the air and form a layer of copper oxide which is a dull greenish-grey colour. When you mix the salt (sodium chloride) with the vinegar (acetic acid) you form Sodium acetate and Hydrogen chloride.

How to clean copper coins?

How to clean coins. 1. Put about a teaspoon of salt into a bowl. 2. Add about 50mls of vinegar and stir to dissolve the salt. 3. Leave the coins in the vinegar and salt solution for 5 minutes. 5. Take them out and compare to other dull copper coins!

What happens when you mix salt and vinegar?

When you mix the salt (sodium chloride) with the vinegar (acetic acid) you form Sodium acetate and Hydrogen chloride. Hydrogen chloride is a very strong acid and this works well at rapidly cleaning the surface of the copper coin leaving it beautifully shiny and removing the oxide.

Where is the statue of liberty located?

The Statue of Liberty is an iconic landmark situated in New York, America. When asked to describe the appearance of the Statue of Liberty, what first things pop into your head? A woman, A torch, green?

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