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