A) A substance that decreases the rate of a chemical reaction. B) A substance that reacts with another substance to form a new compound. 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 lipid molecule B) A structural protein C) A biological catalyst D) A neurotransmitter
A) To inhibit the catalytic activity of a catalyst B) To replace the catalyst in a reaction C) To enhance the catalytic activity of a catalyst D) To change the chemical nature of the catalyst
A) Increasing the production cost B) Making the reactions more hazardous C) Causing more waste to be generated D) Lowering the activation energy and increasing reaction rates
A) When a byproduct of a reaction poisons the catalyst B) When a catalyst is deactivated by the reaction mixture C) When a reactant of a reaction accelerates the reaction D) When a product of a reaction acts as a catalyst for that reaction
A) Silver B) Enzymes C) Magnesium oxide D) Carbon nanotubes
A) To produce more greenhouse gases B) To increase the fuel efficiency of the engine C) To reduce harmful emissions by converting them into less harmful substances D) To increase engine power
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) The cost of the catalyst used in a reaction B) The ease of recycling the catalyst C) The speed at which a catalyst degrades D) The ability of a catalyst to promote one specific reaction pathway over others
A) Solid catalysts are always less efficient than homogeneous catalysts B) Solid catalysts have a higher reaction selectivity C) Solid catalysts are never used in industrial processes D) Solid catalysts are typically easier to separate from the reaction mixture
A) Greek, meaning 'loosen' or 'untie'. B) French, meaning 'to change'. C) German, meaning 'to assist'. D) Latin, meaning 'to speed up'.
A) enzyme unit B) katal C) mole per second D) turnover number (TON)
A) enzyme unit B) turn over frequency C) katal D) turnover number (TON)
A) oxygen (O2) B) nitric oxide (NO) C) sulfur dioxide (SO2) D) sulfur trioxide (SO3)
A) Hydrogen B) Oxygen C) Carbon dioxide D) Water
A) Abzymes B) Synzymes C) Enzybiotics D) Ribozymes
A) Vladimir Ipatieff B) Wilhelm Ostwald C) Jöns Jakob Berzelius D) Gottlieb Kirchhoff
A) It stabilizes the transition state more than the starting material B) It decreases the available energy from the environment C) It increases the difference in energy between starting materials and products D) It changes the thermodynamic barrier
A) Acetic acid B) Benzene C) High-fructose corn syrup D) Ethanol
A) Johann Wolfgang Döbereiner B) Vladimir Ipatieff C) Gottlieb Kirchhoff D) Humphry Davy
A) Humphry Davy B) Elizabeth Fulhame C) Johann Wolfgang Döbereiner D) Wilhelm Ostwald
A) Fischer–Tropsch synthesis B) Sabatier reaction C) Water-gas shift reaction D) Steam reforming
A) NO2 + SO2 → NO + SO3 B) 2 NO + O2 → 2 NO2 C) NO + SO3 → NO2 + SO2 D) 2 SO2 + O2 → 2 SO3
A) Inorganic catalysts B) Biocatalysts C) Metal catalysts D) Acid–base catalysis
A) $1 trillion B) $700 billion C) $900 billion D) $500 billion
A) Hydroxyacetone B) Levofloxacin C) (R)-1,2-Propandiol D) Noyori asymmetric hydrogenation
A) Singlet oxygen B) Hydrogen peroxide C) Chlorine gas D) Nitric oxide
A) Eilhard Mitscherlich B) Johann Wolfgang Döbereiner C) Humphry Davy D) Elizabeth Fulhame
A) Hydrogenation with nickel catalyst B) Enantioselective catalysis C) Friedel–Crafts reactions D) Biocatalysis
A) Terephthalic acid B) Ammonia C) Methanol D) Acrylic acid
A) Elizabeth Fulhame B) Jöns Jakob Berzelius C) Wilhelm Ostwald D) Vladimir Ipatieff
A) Wilhelm Ostwald B) Vladimir Ipatieff C) Jöns Jakob Berzelius D) Gottlieb Kirchhoff
A) Electrocatalysts B) Organometallic catalysts C) Biocatalysts D) Photocatalysts
A) Fischer–Tropsch synthesis B) Sabatier reaction C) Water-gas shift reaction D) Carbonylation processes
A) Jöns Jakob Berzelius B) Gottlieb Kirchhoff C) Eilhard Mitscherlich D) Elizabeth Fulhame
A) 1794 B) 1811 C) 1835 D) 1880s |