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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
How is rust made? AKA...
oxidized iron atoms bonds with a reduced oxygen atom to form iron oxide, or rust
What has to be present for rust to occur? What acts as an accelerator?
water has to be present

salt acts as an accelerator
Oxidation vs. Reduction
electrons, hydrogen, oxygen
oxidation (lose, loss, gain)

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