Tuesday, September 6, 2011

Term 2 Acids, Bases and Salts



This is a relatively easy subject, especially when compared with the nightmare chemical equations. Acids are substances which have a ph level lower than 7 while bases are those which are higher than 7. 7 is neutral, an example of a neutral substance is water, pure water. Salts are created by chemically bonding an acid and a base, thus neutralising both of them. Some examples are sodium chloride, copper(II) sulfate and ammonium chloride.
Many salts are brightly coloured and many are highly poisonous and not at all suitable for sprinkling onyourfish and chips! Salts containing copper ions are usually blue, those containing nickel are pale green, those containing iron can be green or orange and cobalt salts are pink.
Acids, Bases and Salts is sort of an extension from chemical bonding though as some working still involves chemical equations.

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