Answer Happy

- For a reaction where the energy of the products is greater than the energy of the reactants, which of the following statements is true? A) The process is exothermic. B) The process absorbs more energy than it releases. C) The process has a low activation energy D) The process has a negative ΔH value. - Which of the following is ALWAYS necessary for a chemical reaction to occur: between two reactants, A and B ? A) Equal amounts of A and B must be present. B) A and B must be present in the same physical state, C) The reaction must be carried out at a temperature higher than room temperature. D) A and B must collide with the proper orientation and with a certain minimum amount of energy. E) The mass of A and B must be equal. - Which statement about catalysts is NOT true? A) A catalyst increases the rate of a chemical reaction. B) A catalyst lowers the activation energy of a chemical reaction. C) A catalust lowers the ∧H of a chemical reartion.