1. Solutions of substances
in water are called aqueous solutions. An aqueous solution may be acidic,
or neutral. Water itself is
.
2. An
can be used to show how acidic or alkaline a solution is by the way the
changes eg using universal indicator.
3. A neutral solution turns
indicator
, a very acid solution
, and a very alkaline solution
.
4. The
scale is used to show numerically how acidic or alkaline a solution is. If the pH =
the solution is neutral, if the pH is over 7 it is
and if it is less than 7 it is
.
5. In
reactions: acid + alkali ==>
solution + water
6a. If a solution has a pH of 6 it is classified as a
acid.
6b. If a solution has a pH of 14 it is classified as a
alkali.
6c. If a solution has a pH of
it is classified as a weak alkali.
6d. If a solution has a pH of
it is classified as a strong acid.