Ch 4.2/4.3 : Precipitation Reactions

define molecular equation

shows all the reactants and products
as if they were intact, undissociated compounds.

define total ionic equation

shows all soluble ionic substances dissociated into ions. This gives the most accurate information about species in solution.

defin spectator ions

are ions that are not involved in the actual chemical change. Spectator ions appear unchanged on both sides of the total ionic equation

define net ionic equation

eliminates the spectator ions and shows only the actual chemical change.

define precipitation reaction

In a precipitation reaction two soluble ionic compounds react to give an insoluble product, called a precipitate.

precipitation reactions are also known as ____ and ____.

double displacement reactions ; metathesis reactions

When dissociating molecules in ionic equations, we cannot dissociate ___ and ____ into their respective ions.

non-aqueous substances ; weak acids