States of Matter & Gas Laws

6 terms

A point defect in which equal numbers of cations and anions are missing from their lattice sites.

A crystal arrangement with particles only at the eight corners of a cubic unit cell.

The state of matter in which particles are held in fixed positions, giving a definite shape and volume.

The direct conversion of a solid into a vapour without passing through the liquid state.

A substance held above both its critical temperature and critical pressure, where liquid and gas phases are indistinguishable.

The energy required to increase the surface area of a liquid by unit amount, arising from unbalanced intermolecular forces at the surface.