BBC2 年
Redox, extraction of iron and transition metals
Reduction is the gain of electrons by a substance. It is also the loss of oxygen from a substance. For example, copper(II) oxide can be reduced to form copper when it reacts with hydrogen: ...
BBC4 年
Further chemical reactions, rates and equilibrium, calculations and organic chemistry
Redox, rusting and iron - (CCEA ... loss of oxygen or gain or hydrogen. Rusting is an example of oxidation. Rates of reaction - (CCEA) The rate of reaction increases when reactant particles ...