ZINC – Bluish, grey metal with a melting point of 418°C, it becomes brittle at 200°C and can be powdered at this temperature.

ZIRCON – Natural zirconium silicate, containing when pure 67.3% zirconium oxide, and 32.7% silica, and is used as a moulding medium.

ZINC PLATING – Electroplating process for the deposition of zinc on metallic surfaces.

ZEROTH LAW OF THERMODYNAMICS – States that if two systems are separately in equilibrium with a third system, then the two systems will be in thermal equilibrium with each other.