ch 3 Flashcards
(14 cards)
chemical equations show
reactants and products, relative amounts in a reaction
law of conservation of matter states
matter cannot be created or destroyed: # of atoms in the beginning and end of a reaction remain the same
Number infront of element are called
stoichiometric coefficients
what must chemical equations be balanced for
mass
electrolytes conduct
current
what is 100% ionized
strong electrolyte
does a non electrolyte conduct
no
what does a weak electrolyte have
more molecules than ions
why is chemically pure water a non electrolyte
the [] of H+ and OH- are too low to conduct because theres mostly H2O molecules
what is an example of a nonelectrolyte
chemically pure water
why are electrolytes important
because humans need an electrolyte balance in body fluids
what does conductivity depend on
ion concentration
if there is high ion concentration what does this mean for conductivity
its a better conductor
