Question

atoms may exist singly or be joined together. molecule is the general term used to describe any atoms that are connected by covalent chemical bonds. elements such as hydrogen and oxygen are not compounds because they are composed of only one element. carbon dioxide, on the other hand, is a compound because it is composed of carbon and oxygen atoms in a definite proportion (1:2). there are two main types of chemical bonds that hold atoms together: covalent and ionic. atoms that share electrons in a chemical bond have covalent bonds. ionic bonds occur when electrons are transferred from one atom to another. review the chemical reaction represented here in the chemical equation. what is the reason for including the subscript in the chemical formula for water? a the subscript 2 shows the formation of two water molecules. b the subscript 2 shows that two hydrogen atoms are bonded to one oxygen atom to create water. c since there is h₂ on the left, there must be h₂ on the right of the equation. d the subscript 2 is used to balance the hydrogen atoms on the right side of the equation with the hydrogen atoms on the left side of the equation.

Explanation:

In a water molecule ($H_2O$), the sub - script 2 indicates that two hydrogen atoms are bonded to one oxygen atom to form a water molecule. This is based on the chemical bonding and structure of water.

Answer:

B. The subscript "2" shows that two hydrogen atoms are bonded to one oxygen atom to create water.