Strong electrostatic attraction between oppositely charged ions:

The bond formed when a pair of electrons is shared between two atoms:

. The type of bonding found in metals. We can think of it as positively charged ions in a 'sea' of negatively charged electrons:

Structure of particles arranged in a regular grid-like repeating arrangement:

A group of two or more atoms joined together by covalent bonds:

The bond formed when two pairs of electrons are shared between the same two atoms:

A force of attraction between particles with opposite charges:

A weak force of attraction between molecules:

An electron that is free to move and can carry an electrical current:

A positively charged ion formed when one or more electrons are lost:

A negatively charged ion formed when one or more electrons are lost:

Different arrangements of atoms of the same element, eg graphite and diamond: