Chemical equations are symbolic descriptions of chemical reactions wherein the reactants and the products are represented in terms of their respective chemical equations. They often include the use of symbols to represent variables including the path of the reaction and the physical responses of the reacting entities.
(1) The chemical equation for the reaction of iron with steam can be written as
3Fe(s) + 4H2O → Fe3O4 + H2
Iron + Water → Iron (II, III) oxide + hydrogen gas
The formation of iron(II, III) oxide and hydrogen when red hot iron interacts with steam.
When an iron metal interacts with steam, metal oxide and hydrogen gas are the products that are produced.
(2) The chemical equation for the reaction of calcium with water can be written as
When a metal interacts with water, metal hydroxide and hydrogen gas are the products that are produced.
Metal + steam → Metal hydroxide + Hydrogen