IB Biology: A1.1 Water 1

Front

Covalent bond

Back

A bond formed between or more atoms by the sharing of electrons rather than the transfer of electrons.

Front

Electronegative atom

Back

An atom with a high tendency to attract shared electrons in a chemical bond, leading to a partial negative charge and a polar covalent or ionic bond.

Front

Polar molecules

Back

Molecules that have a slight charge difference across the different poles of the molecule.

Front

Cohesion

Back

The tendency of water molecules to stick to each other due to the hydrogen bonding between them.

Front

Adhesion

Back

The interaction that water molecules have with other (different) molecules and explains why water molecules stick to other polar compounds by forming hydrogen bonds.