water properties

Cards (21)

  • water is a polar compound
  • the oxygen atom binding with the hydrogen atom inside water molecule by covalent bond
  • the bond inside water compound is covalent bond
  • the bond between water compound moleceules
    (between H2O and H2O) is called hydrogen bond
  • unequality in destribution of electrons leads to polarity
  • covalent bond in H2O is polar
  • polar: unequality in destibution of electrons
  • non polar: equality in destribution of electrons
  • partial -ve charge connect with partial +ve charge
  • water moleceules are linked together by hydrogen bond
  • water has a high boiling point due to presence of hydrogen bonds between water molecules, but more heat is needed to break down the hydrogen bond
  • water is a universal (common) solvent
  • water has an ability to dissolve most of substances
    (ionic and polar substances)
  • water can dissolve ionic and polar substances but can't dissolve fatty acids and non polar substances
  • cohesion: H2O molecules stick to other H2O molecules by hydrogen bond so water molecules appear as one column.
    (attatchment of water with water)
  • Adhesion: H2O molecule stick to a non water molecule
    (shape of container)
  • surface tension is the force that keeps water droplets from touching the surface of a liquid
  • surface tension depends on cohesion and adhesion but cohesion in a higher proportion than adhesion
  • surface tension explains why some insects can walk on water surface
  • capillary action is the force of water moving up a surface due to the pressure of the water
  • in capillary action adhesion force is higher than cohesion force