Give the word equation for the following and then balance the equation:

Combustion of methane in oxygen to form carbon dioxide and water.

Give the word equation for the following and then balance the equation :

Steam is passed over heated iron to form magnetic oxide and hydrogen.

Give the word equation for the following and then balance the equation :

Sodium carbonate combines with hydrogen chloride acid to form sodium chloride, water and carbon dioxide.

Give the word equation for the following and then balance the equation :

Zinc metal reacts with hydrochloric acid to produce a solution of zinc chloride and hydrogen gas.

Give balanced chemical equation for the following:

Sodium hydroxide reacts with sulphuric acid to form sodium sulphate and water.

Give balanced chemical equation for the following:

Phosphorus burns in air to form phosphorus pentoxide.

Give balanced chemical equation for the following:

Carbon dioxide gas is passed through lime water to form calcium carbonate and water along with the evolution of heat.

Give balanced chemical equation for the following:

When solid mercury(II) oxide is heated, liquid mercury and oxygen gas are produced.

Give balanced chemical equation for the following:

Marble dissolves in hydrochloric acid to form calcium chloride, water and carbon dioxide gas.