Water

• Water has a slightly negative O atom and slightly positive H atoms, therefore it is a ...

  polar molecule
• Since water is a polar molecule, it can form ...

  hydrogen bonds
• Water is an excellent solvent because of its ...

  1. Polar nature
  2. Ability to form hydrogen bonds
• Since water is an excellent solvent it is also an excellent ...

  transport medium
• Large bodies of water are slow to change temperature, due to water being a stable habitat. Why is this?

  A large amount of energy is needed to raise the temperature of water
• A large amount of energy is needed to convert water to a gas so water has a ...

  High latent heat of vaporisation
• Below 4 degrees, the density of water starts to increase, so therefore ice floats on water and insulates the water under it which reduces the tendency for large bodies of water to freeze completely

  Ice is more dense than water
• Water molecules have strong cohesive forces ...

  1. Water is able to move in long, unbroken columns through vascular tissue in plants
  2. High cohesion also results in high surface tension at the surface of water. Allows small organisms to use the surface of water as a habitat