What happens when magnisium burns?

Answer 1

Magnisium burns with a very bright spark, when its finished burning the magnisium goes all crumy and grey.

Answer 2

When magnesium burns, it reacts with oxygen in the air to form magnesium oxide and produces a bright white light. This is a highly exothermic reaction, releasing a large amount of heat and energy. The resulting magnesium oxide residue is a white powder.