Which non-metal is required by heavy chemical industries?
(a) State any three differences between the physical properties of metal and non-metals. (b) Differentiate between metals and non-metals on the basis of their chemical properties. (c) State three reasons (of which at least one must be chemical) for believing that sodium is a metal. (d) State three reasons (of which at least one must be chemical) for believing that sulphur is a non - metal. (e) Which non-metal has been placed in the reactivity series of metal?
State one chemical property which can be used to distinguish a metal from a non-metal.