When magnesium ribbon is burnt in air, an ash of white colour is produced. Write chemical equation for the reaction giving the chemical name of the ash produced. State the type of chemical reaction giving justification for your answer.

When a magnesium ribbon is burnt in air, it reacts with oxygen to produce a white ash of magnesium oxide.

1. Chemical Equation

$$2Mg(s) + O_2(g) \rightarrow 2MgO(s)$$

2. Chemical Name of the Ash

Magnesium oxide

3. Type of Chemical Reaction

Combination Reaction (It is also an oxidation and an exothermic reaction).

4. Justification

A combination reaction is defined as a reaction in which a single product is formed from two or more reactants. Here, two reactants—magnesium ($Mg$) and oxygen ($O_2$)—combine to form a single product, magnesium oxide ($MgO$).