saima jafri

air pollutants-sources and effects making use of air by fractional distillation separating gases from air fractional distillation of air rusting problem and preventing rust water treatment or water supply water treatment methods electronic arrangement nucleon number atomic number atomic structure and periodic table making insoluble salts by precipitation making insoluble salts precipitation crystalising salt from a salt solution making salts by titration titration making soluble salts crystallisation and distillation filtration methods of purification heating and cooling curves describe and explain diffusion describe state changes and kinetic theory kinetic particle theory liquids and gases structure of solids changes of state in terms of the kinetictheory alkalies and neutral soutions effect of indicators on acids chemical properties of acids and alakalaies reactions of acids and alkalies acids and alkalies