Magnesium ribbon, when heated in a Bunsen burner flame, reacts with oxygen in the air to form magnesium oxide.
This reaction is an example of
reduction
thermal decomposition
oxidation
polymerisation
Practise Edexcel GCSE Chemistry Obtaining and using metals with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.