water properties

• 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