Genre: Information/Explanation

A region in a system , of uniform or uniformly varying properties , bounded by a surface , where properties change abruptly . A substance in a system , produced by any equilibrium reaction in that system . A physical property of a system , which can be observed or measured . Any of the chemical substances in a system . The solid , liquid or gaseous part of a system . Any process such as boiling , evaporation , condensation , freezing , melting etc. 2 The number of components of a system is : The minimum number of chemical substances necessary to define the composition of all parts of the system . The number of substances in a system , produced by any equilibrium reaction in that system . The number of chemical substances in a system . The number of intensive physical properties of a system which can be measured The number of processes such as boiling , evaporation , condensation , freezing , melting etc. occurring in a system . The number of solid , liquid or gaseous parts of a system .