Structure

• what type of structure do water molecules have?

  a simple structure
• what is a molecule of water made up of?

  • One atom of oxygen joined to two atoms of hydrogen by shared electrons
• Why is water a POLAR MOLECULE?


  • Because the shared negative hydrogen electrons are pulled towards the oxygen atom, the other side of each hydrogen atom is left with a slight positive charge
  • The unshared negative electrons on the oxygen atom give it a slight negative charge
  • This makes water a POLAR MOLECULE- it has a partial negative charge on one side and a partial positive charge on the other
• what is hydrogen bonding in water?


  • The slightly negatively-charged oxygen atoms attract the slightly positively-charged hydrogen atoms of other water molecules
  • This attraction is called HYDROGEN BONDING
• what does hydrogen bonding give water?


  some of its useful properties