Question

How can you use the formation of water from hydrogen and oxygen to explain the following terms: chemical reaction reactant, and product?

Answer 1

Hint: In a chemical reaction two or more reactant compounds react with each other under chemical condition to form two or more products. The reactants are written on the left side of the chemical reaction and the products are written on the right side of the chemical reaction.

Complete step by step answer:
Chemical reaction is defined as reaction taking place by chemical means. In chemical reactions two or more reactant components react with each other to form two or more products. The reactants are written in the left side of the chemical reaction and the products are written on the right side of the chemical reaction.
The general chemical reaction is shown below.
$\mathrm{Re}actant\to Product$
The chemical reaction can be written in the form of a chemical equation. The chemical equation is represented in the form of a chemical symbol of the chemical element where the reactants are written in the left side and the product in the right side.
The water is formed from reacting hydrogen and oxygen.
The chemical reaction is shown below.
$H_2(g)+O_2(g)\to H_{2}O(l)$
Here hydrogen reacts with oxygen to form water.
The balanced chemical equation is defined as the reaction where the number of moles of reactants is the same as the number of moles of products.
The balanced chemical equation is shown below.
$H_2(g)+{\displaystyle \frac{1}{2}}{O}_2(g)\to H_{2}O(l)$
In this reaction one mole of hydrogen reacts with half mole of oxygen to form one mole of water.
Here, hydrogen and oxygen are the reactants and water is the product.

Note:
In a chemical reaction it is necessary to balance the chemical reaction as it helps to determine how many moles of reactants are reacting and how many moles of products are formed. When the number of moles of reactant and products are equal then the chemical reaction is completed.