Paper 2

    Subdecks (5)

    Cards (201)

    • What factors can affect the rate of chemical reactions?
      Concentration, pressure, surface area, temperature, catalysts
    • Why is understanding energy changes important in chemical reactions?
      It helps maximize yield of desired products
    • How is the mean rate of a reaction calculated?
      Quantity of reactant used over time taken
    • What does drawing tangents to reaction graphs help determine?
      The rate of reaction at a specific time
    • What does collision theory explain?
      How factors affect rates of reactions
    • What is activation energy?
      The minimum energy needed for reactions
    • How does increasing temperature affect reaction rates?
      It increases frequency and energy of collisions
    • What role do catalysts play in chemical reactions?
      They increase reaction rates without being consumed
    • What is a reversible reaction?
      A reaction where products can form reactants
    • What happens at equilibrium in a reversible reaction?
      Forward and reverse reactions occur at the same rate
    • What does Le Chatelier’s Principle predict?
      How systems respond to changes at equilibrium
    • What happens if the concentration of a reactant is increased at equilibrium?
      More products will be formed until equilibrium
    • How does temperature change affect equilibrium for endothermic reactions?
      Increasing temperature increases product amounts
    • What happens to gaseous reactions at equilibrium when pressure is increased?
      Equilibrium shifts towards fewer molecules
    • What are the factors affecting the rates of chemical reactions?
      • Concentration of reactants
      • Pressure of reacting gases
      • Surface area of solid reactants
      • Temperature
      • Presence of catalysts
    • What are the effects of changing conditions on equilibrium?
      • Changes in concentration shift equilibrium
      • Changes in temperature affect product amounts
      • Changes in pressure shift equilibrium based on molecule count