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A-Level Biology OCR A

Water Heat High Lot Energy Explain Polar Nature

Front Explain why the polar nature of water allows it to be a useful coolant.
Back Water as a coolant
  • Because of its high thermal stability (high specific heat capacity) meaning it requires a lot of heat gain or loss to change its temperature
  • It also has a high latent heat of vaporisation (large amount of energy is needed to convert liquid water into gas)
  • Hydrogen bonding holds water molecules together, it takes a lot of energy to overcome them in order to release the particles and cause water to melt/evaporate

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