Mix

Sieving – use to separate different sized solid particles of various sizes. Used in banks, mining industry and to sort foodstuffs.
Filtration – used separate an insoluble substance from a liquid. Un-dissolved solid particles are separated from a liquid (or gas) by passing the mixture through a screen such as filter paper that is fine enough to collect particles of solid.
Evaporation – evaporation separates soluble substance from a solution.
Distillation – used to purify liquids (to obtain a solvent from a solution). It involves boiling a liquid and cooling the gas produced to condense it back to the liquid state. Effective when the components have different boiling points. (more…)

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Valences

Simple/Polyatomic Ions Valence

Silver 1+
Iron II 2+
Copper II 2+ (more…)

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