Question

When magnesium burns in air, heat and light are produced. a. What are the reactants ? b. What are the product? c. Write down the balanced chemical equation of this reaction?​

Answer 1

Explanation:

a. When magnesium burns, it is actually reacting with oxygen in the air and not with fire. Fire is what we call the heat and light produced when things burn. Magnesium reacts with oxygen to make a compound called magnesium oxide.

Answer 2

CHEMICAL COMBUSTION -

• When a substance burns in the air with oxygen, the reaction is known as a combustion reaction.
• Reactions are always exothermic and redox between a fuel and an oxidant.
• When magnesium burns in the air, it forms magnesium oxide as the product.
• The reaction is a chemical change and irreversible in nature.
• The composition of the magnesium changes to form magnesium oxide.
• In the reaction,

(a) Reactants - Magnesium and Oxygen

(b) Products - Magnesium oxide

(c) The balanced chemical equation is -

                                   $2Mg + O_2$ → $2MgO$