Question

Which of the following best explains why most chemical reactions proceed more quickly when the concentrations of reactants are increased? (2 points) At higher concentrations, reactant molecules move more quickly. The increased concentration increases the number of collisions between molecules. At higher concentrations, product molecules are able to catalyze the reaction. The products of chemical reactions are more stable at higher concentrations.

Answer 1

At higher concentrations, it catalyzes the collisions. think of it like a glow-stick. the smaller ones aren't a bright because less chemicals are inside the tube, but large glow-sticks are brighter, and has more chemicals contained in the tube. the correct answer is 3, the catalyst  answer. At higher concentrations, product molecules are able to catalyze the reaction.
 hope this helped. good luck!