Check my answers please! 1.Which of the following conditions increases the number of collisions between reactant molecules in a given volume? decreasing the temperature adding more reactant molecules (Correct) making the particles clump together removing a catalyst 2.For this chemical reaction CH3Br + OH- = CH3OH + Br-, which of the following would indicate that the reaction occurred? increase in CH3Br concentration over time or decrease (Answer decrease) increase in OH concentration over time or decrease