Strontium sulfate becomes less soluble in an aqueous solution when sodium sulfate is added because the addition of sulfate ions shifts equilibrium to the left.
the addition of sodium ions shifts equilibrium to the left.
the addition of sulfate ions shifts equilibrium to the right.
the addition of sodium ions shifts equilibrium to the right.

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Why do oxygen have a strong attractive force for electrons