CHROMTOGRAPHY

Polarity

Determined by the electronegativity difference of atoms comprising molecule.

Polar molecule

Reflects a high electronegativity difference between the atoms forming the covalent bonds in a molecule.

Nonpolar Molecule

Reflects little to no electronegativity difference between the atoms forming a molecule and therefore the equal sharing of the electrons between the atoms forming the covalent bonds

Hydrophilicity/Hydrophobicity

The tendency of a substance to interact with water (hydrophilicity) or to repel water (hydrophobicity), influencing solubility and molecular behavior in aqueous environments.

Intermolecular Bond

Weak bonds formed between individual molecules. 2 important intermolecular bonds to be on the lookout for today include hydrogen and ionic bonding.

Hydrogen Bonds

Requires a hydrogen donor and hydrogen acceptor

Ionic bonds

Intermolecular bond between molecules containing ions of opposite charge