Rate of Reactions

  1. What factors affect reaction rates?
    • Concentration
    • Temperature
    • Pressure
    • Surface area
    • Catalyst
    • Light
  2. What 3 things must be present for a reaction to occur?
    • Reactants must collide effectively
    • They must have enough activation energy
    • The molecules must be alligned correctly when colliding
  3. How does concentration affect the rate of reaction?
    • At high concentration;
    • There are more reactant particles per unit volume
    • There's increase frequency of effective collisions
    • Increased speed of reaction
  4. How does an increased surface area affect the rate of reaction?
    • More effective collision
    • More area exposed for reaction to occur
    • Increased reaction rate
  5. How does temperature affect the rate of reaction?
    • More of the particles get activation energy
    • They move faster
    • Increases the effectiveness of collision
    • Increased speed of reaction
  6. How does catalyst affect the rate of reaction?
    • Lower the activation energy so more particles get it. This provides an alternative route or path for the reaction
    • More effective collision
    • Increased reaction rate
  7. How does light affect the rate of reaction?
    • Light energy can initiate or catalyse particular chemical reactions. More of the particles get activation energy
    • Increased effectiveness of collision
    • Increased rate of reaction
Author
giavanna14
ID
317625
Card Set
Rate of Reactions
Description
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Updated