Turning a Coin to Silver and Gold (Simple Redox Reaction)

Turning a Coin to Silver and Gold (Simple Redox Reaction) This simple experiment will make you understand the redox reaction. This is one of my favorite experiments so I decided to make a post about it. Things you’ll need: a copper coin (a penny, basically), zinc powder, sodium hydroxide (more than 50%), alcohol lamp, forceps, and a beaker. Pour Sodium Hydroxide into a beaker and pour some zinc dust in it, enough to cover the coin. Put the coin the beaker and wait for a couple hours, I’ll be using my country’s copper coin.   Take the coin out with forceps and wash it with water, now you have a silver coin. If you want to continue, do the following steps: Make sure the coin is dry. Heat it up with an alcohol lamp until it’s yellow. Enjoy. An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two chemicals. A redox reaction is any chemical reaction in which the oxidation number of a molecule, ion, or atom changes by losing or gaining an electron. For example, like this experiment, the zinc transferred its ions to the copper; that’s how the coin turned silver, and that’s why this is a redox reaction. What about turning it to gold? The color of silver and copper are just mixing together when heated and that makes the gold color.

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Do Water Vapors Effect the Mass of Copper (II) Sulfate?

Do Water Vapors Effect the Mass of Copper (II) Sulfate? The pentahydrate form, which is blue, is heated, turning the copper sulfate into the anhydrous form which is white, while the water that was present in the pentahydrate form evaporates. I wanted to know if water vapors affect the mass of copper sulfate. Things you’ll need: crucible, balance, Copper (II) Sulphate, spoon, alcohol lamp, […]

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Does Mercury Conduct Electricity?

Does Mercury Conduct Electricity? I bought this from my science shop yesterday so that I could perform more experiments. Why is it a liquid? The reason for mercury being a liquid is complex. It is heavy; a chunk of iron can float on mercury. Compared to other metals, it does not conduct heat well. However, it conducts electricity fairly well. Mercury is the only metal that is a liquid at normal […]

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Copper Plating: Part #1

Copper Plating: Part #1 I’ve never used a copper stick in one of my experiments, I found out that I’m good at plating, which is what we’re going to be doing in this post. You probably wondering why my copper is a green, it’s because of chemical reactions with the elements. Just as iron that is left unprotected in the […]

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Warm Chemistry

Warm Chemistry After that long break, I would like to do a very simple experiment to start. This one is pretty common, most people probably know this experiment, but no one realized that there was more to it. Things you’ll need: Yeast, hydrogen peroxide, a beaker, and a thermometer. Pour 200 ml of hydrogen peroxide into a beaker. Insert the […]

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