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