Reversible and Irreversible Reactions

Year 6 have been looking at reversible and irreversible reactions.  We have looked at how sometimes combining or heating substances makes mixtures which can be separated and returned to their original state.  We found that melting is just a physical change and a reversible reaction.  However, burning is a chemical change and is irreversible.  We have done many exciting experiments within this topic and have had a lot of fun doing them!