Q.1. Explain the changes that happen when :
a) Magnesium strip is ignited.
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When a piece of magnesium ribbon is ignited, light and heat are produced. Purpose/Goal: A quick demonstration which illustrates the concept of an exothermic reaction, as well as one that produces light energy. The heat of formation of magnesium oxide is -601.83 kJ/mol.
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When the magnesium metal burns it reacts with oxygen found in the air to form Magnesium Oxide. ... After it burns, it forms a white powder of the magnesium oxide. Magnesium gives up two electrons to oxygen atoms to form this powdery product. This is an exothermic reaction.
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