A very simple experiment showing what happens when you add calcium and copper carbonate to dilute hydrochloric acid.
Another very simple experiment showing what happens when you add magnesium,, zinc, iron and copper to dilute hydrochloric acid.
A fun way of showing the colours of universal indicator – can be extended to discussion of pH and density gradients.
A microscale, dropp reaction loking at a few common indicators and their colour changes
Reaction of of sulphuric acid with copper oxide to make copper sulphate.
A microscale version of an acid-base titration.
A striking demonstration – resulting from the powerful dehydration effect of the sulphuric acid.