Types of chemical reactions

• Oxidation - when oxygen is added to a substance

  e.g. copper -> copper oxide
• Thermal decomposition - when something is broken down by heat

  e.g. copper carbonate -> copper oxide

  + carbon dioxide
• Reduction - when oxygen is removed from a substance

  e.g. copper oxide -> copper
• Redox - oxidation and reduction occur at the same time
• Exothermic - when heat energy is transferred to the surroundings and the temperature of the surroundings increase
• Endothermic - when heat energy is taken in from the surroundings , causing the temperature of the surroundings to cool down