Energy Transfers

• Energy is always conserved
• Exothermic reactions

  transfer energy to the surroundings
• Examples of exothermic reactions

  Combustion,Many oxidation reactions and Neutralisation
• Exothermic uses in daily life

  Self heating cans and hand warmers
• Endothermic reactions

  take in energy from the surroundings
• Examples of endothermic reactions

  Thermal decomposition, Reaction of citric acid and sodium hydrogencarbonate,and Photosynthesis
• Endothermic uses in daily life


  Sports cool packs