Types of processes:
Crystallation is where you separate a solute solid from a solid . Eg, evaporating off water by heating and seeing crystals form in the containter; all water should be evaportated off.
Filteration is the technique of filtering and separating substances that are insoluable in a particular solvent from those that are soluble in the solvent.
Chromatography is where compounds in a mixture will dissolve better than in the solvent chosen.
Fractional distillation is the separartion of a mixture into it's compotents parts or fractions.
potassium + water = potassium hydroxide + hydrogen
Where do you find....
Reactive metals- Group 1 and 2