part 1 redox rxn

electrochemistry

the study of relationships between chemical reactions and the flow of electrons

electronegativity

the ability of an element to attract electrons towards itself

most electronegative atoms

fluorine, oxygen, chlorine, nitrogen, bromine

least electronegative atoms

radium, francium, cesium, rubidium

how do electrons move between species?

through covalently bonded molecules and ionic bonds

how do covalently bonded molecules move electrons between species?

elements share equally ex. H2 compouns share unequally ex H20

how do ionic bonds move electrons between species?

they transfer electrons (give or take)

oxidation reduction reactions (redox reactions)

reactions where one or more electrons are transfered

oxidation

where electrons are removed from an atom or ion

reduction

where electrons are gained from an atom or ion

reducing agent

causes the reduction of another species

oxidation agent

causes the oxidation of another species