The Water Molecule
   • Water in a liquid state cover 
    most of the earths surface.
   • Water contains: 10 protons,  10 
    electrons, and 10 neutrons.
   • Water is a polar molecule.
   Polarity
   • The oxygen of end of the 
    molecule has a slight negative 
    charge.
   • Hydrogen end of the molecule 
    has a slight positive charge
   Polarity
   The reasons for polarity
   • The angles of its chemical bonds.
   • Oxygen 8 protons much stronger 
    attraction for electrons.
   • The charges are unevenly 
    distributed, bit like a magnet 
    with two poles.
    Hydrogen Bonding 
    • Hydrogen bond: the attraction 
    between a hydrogen atom to an 
    oxygen atom.
    • Because of the positive and negative 
    of a polar molecule.
    • Water is able to form multiple 
    hydrogen bonds.
    • Accounts for water special 
    properties.
    • Hydrogen bonds are not as strong as 
    covalent or ionic bonds.
   Cohesion
   • Cohesion is an attraction 
    between molecules of the same 
    substance.
   • Extremely cohesive because one 
    water molecule can have four 
    hydrogen bonds. 
   • Causes water to from beads on 
    smooth surface.
   • Produces surface tension (why 
    spiders can walk on water)