Does Oleic acid have larger molecules than water molecules? and what type of bonding does oleic bonds have?

Answer 1

Of course it is larger http://kaffee.50webs.com/Science/labs/Chem/Lab-Size.of.Molecule.html
It has many more molecules than H2O

Notice it is a covalent chain, with a Hydrophillic and an hydrophobic end.
Within the molecule, it is all covalent, The hydrophobic end will attract water molecules, and the hydrophillic area will be attracted to other covalent chains.