1. Which of the following DOES NOT describes enzymes? A. A specific enzyme can react with different substrates B. Consumed during the process of metabolism of biomolecules C. Found in both biological and inorganic reactions in the body D. Usually proteins that control rate of reactions in biological compounds 2. How does a catalyst increase the rate of a chemical reaction? A. changing the concentration of reactants B. decreasing the heat of reaction C. increasing kinetic energy D. providing an alternate reaction mechanism

1. Which of the following DOES NOT describes enzymes? A. A specific enzyme can react with different substrates B. Consumed during the process of metabolism of biomolecules C. Found in both biological and inorganic reactions in the body D. Usually proteins that control rate of reactions in biological compounds 2. How does a catalyst increase the rate of a chemical reaction? A. changing the concentration of reactants B. decreasing the heat of reaction C. increasing kinetic energy D. providing an alternate reaction mechanism

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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If the energy of activation is lowered for a chemical reaction, which is true? OThe reaction proceeds faster The reaction must be exothermic OThe reaction does not occur O The reaction must be endothermic The reaction proceeds slower
What happens to the reaction rate if the energy of the product is lowered?
What do you call the high-energy complex that forms from the collision of reactants, and which subsequently falls apart to yield the products? a. steady state b. catalyst c. intermediate d. transition state
Explain why a high energy of activation causes a reaction to be slow.
True or false
A catalyst: O a. always decreases the rate for a reaction. O b. always increases the activation energy for a reaction O c. Actually participates in the reaction. O d. changes the equilibrium concentration of the products.
Chemistry
Which of the following statements is correct? Select one: a. The catalyst takes a part in the reaction, but it is not consumed during the reaction O b. The catalyst isn't one of the reaction products c. The catalyst is one of the reaction products O d. The catalyst do not take a part in the reaction
If a chemical reaction is going to move forward, what part of the reaction must collide? A. reactants and products B. reactants with activated complex C. products only D. reactants only
Please help me answer these subunits!
Why does the rate of most reactions decrease over time? A. A decrease in reactant concentration reduces the frequency of successful collisions. B. A decrease in temperature reduces the average kinetic energy of the particles. C. An increase in product concentration interferes with the effectiveness of the catalyst. D. An increase in pressure of the system reduces the movement and energy of particles.
How does low concentration affect reaction rate? A. It decreases the amount of reactants B. It increases the frequency of particle collisions C. It highers the activation energy D. It increases the energy of particle collisions