GEOLOGY

Detailed explanation-1: -The chemical formula for water is H2O, which means each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms. Thus, water is a compound. It’s also a molecule, which is any chemical species formed by two or more atoms chemically bonded to each other.

Detailed explanation-2: -Water is a compound because it is made up of water molecules. There is no such thing as water atoms. Water molecules are made of hydrogen and oxygen atoms, in the definite proportion of two hydrogens for one oxygen.

Detailed explanation-3: -It is not a compound because it is made from atoms of only one element-oxygen. This type of molecule is called a diatomic molecule, a molecule made from two atoms of the same type.

Detailed explanation-4: -A molecule is a piece of matter that contains two or more atoms. Atoms are the tiniest pieces of matter. The scientific name for water is H2O. It is called H2O because it has two atoms of hydrogen (H) and one atom of oxygen (O).

Detailed explanation-5: -A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That’s why water is sometimes referred to as H2O. A single drop of water contains billions of water molecules.