A) The process of slowing down a chemical reaction by adding a catalyst B) The process of changing the reactants into products without a catalyst C) The process of increasing the rate of a chemical reaction by adding a substance known as a catalyst D) The process of changing the products back into reactants using a catalyst
A) A substance that is consumed in a reaction and prevents the reaction from occurring B) A substance that changes the products into reactants in a chemical reaction C) A substance that slows down a chemical reaction by participating in the reaction D) A substance that increases the rate of a chemical reaction without being consumed in the reaction
A) Proteins B) Lipids C) Nucleic acids D) Carbohydrates
A) Lowering the activation energy required for the reaction to occur B) Changing the equilibrium constant to favor product formation C) Slowing down the reaction by increasing the activation energy D) Increasing the overall energy change of the reaction
A) Chemical catalyst B) Homogeneous catalyst C) Heterogeneous catalyst D) Biological catalyst
A) Efficiency B) Regulation C) Irreversibility D) Specificity
A) They speed up all reactions regardless of their impact B) They enable efficient use of resources and energy in chemical processes C) They increase the environmental impact of chemical reactions D) They hinder the development of green technologies
A) The number of substrate molecules converted into product by one molecule of catalyst B) The equilibrium constant of a catalyzed reaction C) The energy change in a catalytic reaction D) The time required for a catalyst to start working
A) By changing the equilibrium constant of the reaction B) By slowing down the reaction to ensure complete conversion C) By increasing the overall energy change of the reaction D) By providing an alternative reaction pathway with lower activation energy
A) A reaction that involves multiple catalysts B) A reaction where one of the products acts as a catalyst for the reaction C) A reaction that requires no catalyst for completion D) A reaction that is catalyzed by enzymes only
A) Homogeneous catalysis occurs in the same phase as the reactants, while heterogeneous catalysis occurs in a different phase B) Homogeneous catalysis involves enzymes, while heterogeneous catalysis does not C) Heterogeneous catalysts are only used in biological systems D) Homogeneous catalysts are more expensive than heterogeneous catalysts |