electrochemistry, Redox and Galvanic cells

what is an electrochemical cell?

is a device capable of either generating electrical energy fro chemical reactions or using chemical reactions to cause chemical reactions

what are some examples of redox reactions?

combustion, rusting, charging or discharging a battery, fermentation, cellular respiration

a non spontaneous redox reaction requires what?

energy

a spontaneous redox reaction produces or requires energy

produces

what is electrochemistry?

is the study of chemical processes that cause electrons to move producing or consuming energy and transforming matter

electron transfer results in…

consumption or production of energy and transformation of matter

reactions involving transfer of electrons are called what?

redox reactions

what is a redox reaction?

is a type of chemical reaction that involves a transfer of electrons between two species

what is the most recent definition for an oxidation reaction?

loss of electrons (i.e gain of charge)

what is the most recent definition of reduction reactions?

gain of electrons
(i.e loss of charge)

what are two old definitions for oxidation reactions?

chemical removal of hydrogen and the chemical addition of oxygen to a substance

what are two old definitions of reduction reactions?

the chemical addition of hydrogen and the chemical removal of oxygen from a substance

what is the oxidising agent or oxidant?

is a species which has gained electrons has been reduced (the chemical in the redox equation)

what is the reducing agent or the reductant?

is a species which has lost electrons