1. A solution of vinegar has a pH of 3 and is classed as
acid. It can be used to treat a wasp sting because the sting is
.
2. A solution of sodium
has a pH of
and is used in some domestic
cleaners. Care must taken in using it because it is a very
alkali.
3. Salt solutions are usually neutral with a pH of
and turn universal indicator
and so we can safely bathe in the sea!
4. When this hazard warning symbol is put on a chemical container it means it is an
.
5. Chemicals such as
acid are a
acid with a pH of
and have a 2nd warning label which means it is
. The acid can be used in industry to clean
surfaces.
6. Ammonia solution will turn universal indicator to a
colour.
7. A fizzy citrus drink will turn universal indicator to an
colour.