A) A substance that decreases the rate of a chemical reaction. B) A substance that increases the rate of a chemical reaction without being consumed in the process. C) A substance that reacts with another substance to form a new compound. D) A substance that stops a chemical reaction from occurring.
A) A biological catalyst B) A lipid molecule C) A structural protein D) A neurotransmitter
A) To inhibit the catalytic activity of a catalyst B) To enhance the catalytic activity of a catalyst C) To replace the catalyst in a reaction D) To change the chemical nature of the catalyst
A) Causing more waste to be generated B) Lowering the activation energy and increasing reaction rates C) Increasing the production cost D) Making the reactions more hazardous
A) To produce more greenhouse gases B) To increase the fuel efficiency of the engine C) To increase engine power D) To reduce harmful emissions by converting them into less harmful substances
A) When a catalyst is deactivated by the reaction mixture B) When a product of a reaction acts as a catalyst for that reaction C) When a reactant of a reaction accelerates the reaction D) When a byproduct of a reaction poisons the catalyst
A) The cost of the catalyst used in a reaction B) The ability of a catalyst to promote one specific reaction pathway over others C) The speed at which a catalyst degrades D) The ease of recycling the catalyst
A) Silver B) Magnesium oxide C) Carbon nanotubes D) Enzymes
A) Solid catalysts have a higher reaction selectivity B) Solid catalysts are always less efficient than homogeneous catalysts C) Solid catalysts are never used in industrial processes D) Solid catalysts are typically easier to separate from the reaction mixture
A) Surface area of the catalyst B) Temperature of the surrounding environment C) Color of the catalyst D) Vessel size in which the reaction takes place |