Collision Theory Basics
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Questions and Answers

According to the collision theory, what must particles possess for collisions to be effective?

  • Minimum amount of energy (correct)
  • No energy requirement
  • Variable amount of energy
  • Maximum amount of energy

    • What is activation energy in a chemical reaction?

  • The energy of the colliding molecules
  • The energy absorbed during a reaction
  • The energy released during a reaction
  • The minimum energy required for a reaction to occur (correct)

    • What is one of the factors affecting reaction rates according to the text?

  • Temperature of the surroundings
  • Color of the solution
  • Concentration of reactants (correct)
  • Volume of the solution

    • Why is proper orientation important for effective collisions between molecules?

    <p>To facilitate successful reactions</p> Signup and view all the answers

    What role does the collision theory attribute to molecules in a chemical reaction?

    <p>Molecules must collide to react</p> Signup and view all the answers

    What is concentration with regard to chemical reactions?

    <p>Amount of solute per unit volume</p> Signup and view all the answers

    What is the relationship between the concentration of reactants and the rate of a chemical reaction?

    <p>The rate of reaction is directly proportional to the concentration of reactants</p> Signup and view all the answers

    What is the effect of increasing temperature on the rate of a chemical reaction, according to collision theory?

    <p>Increasing temperature increases the kinetic energy of the molecules, increasing the rate of reaction</p> Signup and view all the answers

    What is the relationship between surface area and particle size for solids?

    <p>As particle size decreases, surface area increases</p> Signup and view all the answers

    What is the primary function of a catalyst in a chemical reaction?

    <p>To provide an alternative reaction pathway with lower activation energy</p> Signup and view all the answers

    In a homogeneous catalytic reaction, what is the phase of the catalyst relative to the reactants?

    <p>The catalyst is in the same phase as the reactants</p> Signup and view all the answers

    What is the typical phase of a heterogeneous catalyst?

    <p>Solid</p> Signup and view all the answers

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