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22 Cards in this Set
- Front
- Back
What is an oxidized iron atom?
What is a reduced oxygen atom? |
atom that lost electrons
atom that gained electrons |
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How is rust made? AKA...
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oxidized iron atoms bonds with a reduced oxygen atom to form iron oxide, or rust
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What has to be present for rust to occur? What acts as an accelerator?
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water has to be present
salt acts as an accelerator |
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Oxidation vs. Reduction
electrons, hydrogen, oxygen |
oxidation (lose, loss, gain)
reduction (gain, gain, loss) |
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Oxidation and reduction must occur...
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together
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Name some common oxidizing agents.
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antiseptics/ disinfectants, oxygen, hydrogen peroxide, benzoyl peroxide,iodine, chlroine, sodium hypochlorite
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Where can we find reducing agents?
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less common at home more common in a factory setting
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What do humans and animals use respiration or breathing for?
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oxidizing food for energy
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What do plants do in photosynthesis?
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reduce carbon to form glucose and oxygen
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The concept of batteries relies on their natural tendency to do what?
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transfer electrons between substances
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For batteries, what is required in order for the substances to be able to gain and lose electrons?
why? |
physical separation
so transfer can only occur through a wire |
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Anode vs. cathode
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anode- the electrode where oxidation occurs
cathode- the electrode where reduction occurs |
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How do rechargeable batteries work?
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reverse electron transfer process
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An overall reaction will be the sum of...
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oxidation/ reduction components
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In a Lecanche dry cell, what acts as the anode and the cathode?
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zinc body as anode
carbon rod as cathode |
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Fuel cells immediately convert what kind of energy to what kind of energy?
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chemical to electrical
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What is the most promising of designs to compete with fossil fuel electricity?
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molten carbonate fuel cell (MCFC)
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MCFC
efficiency, size, emissions, relies on? |
54-85%
small size sulfur and nitrogen oxide emissions low relies on a fossil fuel |
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Rusting is a BLANK process.
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redox
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Why does iron oxide suck?
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1/5 of domestic production goes to replace rusted iron, has no structural integrity
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Antioxidants are an example of...
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reducing agents because they promote reduction and retard oxidation
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Free radicals are an example of..
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an oxidizing agent
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