Water Flashcards
What region of a water molecule is slightly negative?
O
What region of a water molecule is slightly positive?
H’s
Why is the O slightly negative?
It has a stronger attraction for electrons
Why are H slightly positive?
They have less attraction for electrons
What is the separation of charge due to uneven share of electrons?
A dipole
What type of molecule is water?
Polar molecule
Why do hydrogen bonds form between water molecules?
As a result of the polarity of water hydrogen bonds form between the positive and negatively charged regions of adjacent water molecules
What type of bonds form between water molecules?
Hydrogen bonds
Hydrogen bonds are strong/weak when there are few
Weak
What happens when there are lots of hydrogen bonds?
They form a strong structure
Give 6 reasons water is so important to living organisms
1- excellent solvent
2- relatively high specific heat capacity
3- relatively high latent heat of vaporisation
4- less dense when a solid
5- high surface tension and cohesion
6- acts as a reagent
