The formation of salts can be problematic for waste processing and storage. "We were able to demonstrate a technique to see when the salts are forming," said John Bussey, a WSU undergraduate who ...
and the salt crystals re-forming. Dissolving a solid in a liquid depends on the interactions and attractions between the molecules of the liquid (solvent) and the particles of the solid (solute).
Zinc oxide is a base, because it reacts with an acid to form a salt and water. It is not an alkali because it does not dissolve in water.
Chlorine, bromine and iodine are the three common Group 7 elements. Group 7 elements form salts when they react with metals. The term ‘halogen’ means ‘salt former’.