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SS2: CHEMISTRY - 2ND TERM

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  1. Water & Solution I | Week 1
    10 Topics
    |
    1 Quiz
  2. Water, Solution and Solubility | Week 2 & 3
    9 Topics
    |
    1 Quiz
  3. Air | Week 4
    4 Topics
    |
    1 Quiz
  4. Pollution | Week 5
    6 Topics
    |
    1 Quiz
  5. Rate of Chemical Reaction | Week 6 & 7
    6 Topics
    |
    1 Quiz
  6. Energy and Energy Effect I | Week 8 & 9
    7 Topics
    |
    1 Quiz
  7. Energy and Energy Effect II | Week 10 & 11
    6 Topics
    |
    1 Quiz
  8. Chemical Equilibrium | Week 12
    8 Topics
    |
    1 Quiz
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Topic Content:

  • Activation Energy and Chemical Reaction

Let us consider the two distinct types of reactions. Exothermic and Endothermic reaction. The energy changes during endothermic and exothermic reactions can be illustrated graphically. This graphical representation of the energy changes in the course of the reaction is known as a reaction profile.

A reaction profile is a sequence of steps shown graphically by which the reaction progresses from reactants, through activated complexes, to products.

The figures below illustrate the energy profile diagram of an endothermic and exothermic reaction.

 

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