Discoloration of dilute Bromine water (Br2 solution, redish brown) by addition reaction: alkene: -C=C- --> + Br2 --> -BrC-CBr- (dibroom alkane)
A carbon=carbon bond is a characteristic of alkenes and is two pairs of electrons bonding two carbon atoms together.
similarity: both have bonds involving four shared electrons. differences: c=o is polar; c=c is not polar.
One 'sigma' (normal, first, single) bond and one 'pi' bond (the unsaturated, stagnant, non rotatable)
ionic compounds