1a) The penny wrapped in the steel was less corroded than the unwrapped one.
1b) Sacrificial metal.
1c) Electrons are being taken away from the copper which means it can't be oxidized anymore.
2) Corrosion is happening because the iron nails are taking the electrons from the aluminum and causing a reaction that causes the aluminum to ionize.
3) It would have prevented the flow of electrons to travel to the aluminum
4) Corrosion is a process that takes place when essential properties within a given material begin to deteriorate, after exposure to elements that recur within the environment. Most often, this deterioration is noticed in metals and referred to as rust. What happens in this case is the chemical reactions that are set up by an exposure of the electrons in the metal to the presence of water and oxygen.
Enrichment:
4Al+ 3 O2 --> 2 Al2O3 (aluminum has oxidized and oxygen has reduced)
3 Fe + 2 Al+3 --> 2 Al + 3 Fe+2 (aluminum reduced back to zero and iron has been oxidized)
1b) Sacrificial metal.
1c) Electrons are being taken away from the copper which means it can't be oxidized anymore.
2) Corrosion is happening because the iron nails are taking the electrons from the aluminum and causing a reaction that causes the aluminum to ionize.
3) It would have prevented the flow of electrons to travel to the aluminum
4) Corrosion is a process that takes place when essential properties within a given material begin to deteriorate, after exposure to elements that recur within the environment. Most often, this deterioration is noticed in metals and referred to as rust. What happens in this case is the chemical reactions that are set up by an exposure of the electrons in the metal to the presence of water and oxygen.
Enrichment:
4Al+ 3 O2 --> 2 Al2O3 (aluminum has oxidized and oxygen has reduced)
3 Fe + 2 Al+3 --> 2 Al + 3 Fe+2 (aluminum reduced back to zero and iron has been oxidized)
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