States of Matter & Gas Laws
60 terms · page 3 of 3
Root Mean Square Speed
The square root of the average of the squared molecular speeds in a gas sample.
States of Matter & Gas LawsSchottky Defect
A point defect in which equal numbers of cations and anions are missing from their lattice sites.
States of Matter & Gas LawsSimple Cubic
A crystal arrangement with particles only at the eight corners of a cubic unit cell.
States of Matter & Gas LawsSolid State
The state of matter in which particles are held in fixed positions, giving a definite shape and volume.
States of Matter & Gas LawsSublimation
The direct conversion of a solid into a vapour without passing through the liquid state.
States of Matter & Gas LawsSupercritical Fluid
A substance held above both its critical temperature and critical pressure, where liquid and gas phases are indistinguishable.
States of Matter & Gas LawsSurface Tension
The energy required to increase the surface area of a liquid by unit amount, arising from unbalanced intermolecular forces at the surface.
States of Matter & Gas LawsTriple Point
The unique temperature and pressure at which the solid, liquid and vapour phases of a substance coexist in equilibrium.
States of Matter & Gas LawsUnit Cell
The smallest repeating three-dimensional unit that, when stacked, reproduces the entire crystal lattice.
States of Matter & Gas LawsVan der Waals Equation
A modified equation of state that corrects the ideal gas law for molecular volume and intermolecular attraction.
States of Matter & Gas LawsVapour Pressure
The pressure exerted by a vapour in dynamic equilibrium with its liquid or solid at a given temperature.
States of Matter & Gas LawsViscosity
A liquid's resistance to flow, arising from internal friction between adjacent layers of molecules.