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ElectroChem Intro
cava chem 303 s2d60 6.01 Electrochemistry Intro
Question | Answer |
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Electrochemistry is the study of the relationship between chemistry and [...] | Electrochemistry is the study of the relationship between chemistry and electricity |
Reduction is when the [...] of something is reduced. | Reduction is when the charge of something is reduced. |
Oxidation is when the charge of something is [-ed]. | Oxidation is when the charge of something is increased. |
The first oxidation reactions studied all involved [...]; that's how it got it's name. | The first oxidation reactions studied all involved oxygen; that's how it got it's name. |
The only way to reduce the charge of a molecule is to add [...] to it. | The only way to reduce the charge of a molecule is to add electrons to it. |
The only way to increase the charge of a molecule is to take [...] away from it. | The only way to increase the charge of a molecule is to take electrons away from it. |
Reduction and [...] always occur together. | Reduction and oxidation always occur together. |
[...] is the short-hand way of saying 'reduction and oxidation' | Redox is the short-hand way of saying 'reduction and oxidation' |
Redox reactions can produce [...]. | Redox reactions can produce electricity. |
Redox reactions involve two [...]-reactions: a reduction reaction and an oxidation reaction. | Redox reactions involve two half-reactions: a reduction reaction and an oxidation reaction. |
Metals with a higher '[...] level' are oxidized more readily. | Metals with a higher 'activity level' are oxidized more readily. |
Metals with a higher 'activity level' will spontaneously donate electrons to metals with a [-er] activity level. | Metals with a higher 'activity level' will spontaneously donate electrons to metals with a lower activity level. |
When you look at an activity level table, picture the electrons flowing [-hill] spontaneously. If you want to push them uphill, you have to provide a power source. | When you look at an activity level table, picture the electrons flowing downhill spontaneously. If you want to push them uphill, you have to provide a power source. |
An electrochemical cell is like a simple battery; it either produces [...] from chemical reactions, or it uses [...] to power a chemical reaction. | An electrochemical cell is like a simple battery; it either produces electricity from chemical reactions, or it uses electricity to power a chemical reaction. |
electricity is the flow of [...] from one place to another. | electricity is the flow of electrons from one place to another. |
One use of an electrochemical cell is to [...] common metals with more expensive metals such as gold. | One use of an electrochemical cell is to plate common metals with more expensive metals such as gold. |