chemistry unit 5

precipitation reactions

a precipitate forms when reactants are combined in an aqueous solution

solubility

the amount of a compound that will dissolve in a given amount of solven

precipitation reactions are

some ionic compounds, not polyatomic ions

recognizing precipitation reaction

new ionic compounds form from 2 (aq) ionic compounds

neutralization reaction

h+ and OH- combine and form water and a salt

oxidation reduction reactions (redox)

electrons are transferred from one atom to another

reduction

the gain of 1 or more electrons

oxidation

the loss of one or more electrons

oxidation and reduction always occur

together

oxidizing agent

the substance that gains electron, causes oxidation

reducing agent

substance that loses electron, causes reduction

ionic equation

an equation in which aqueous ions are explicitly shown

spectator ions

ions which undergo no change during a chemical reaction, appear as both reactant and product

spectator ions do not

change state or chemical composition

net ionic equations

exclude spectator ions, include only ions that undergo change