Endothermic and Exothermic reactions

• Different chemicals store different amounts of energy in their bonds.
• Reaction profiles show the relative energies of the reactants and products in a reaction.
• Exothermic reactions release energy to the surroundings. Some of these reactions are:

  • Combustion
  • Neutralisation
  • Oxidation
• Endothermic reactions take in energy from the surroundings such as:

  • Melting
• This an exothermic reaction profile

  
• This is an endothermic reaction profile