Question

what is the difference between mole and molecule?

Answer 1

Hint: Mole and molecule are the chemical names given to represent the atoms. In moles the atoms are identified as the number of particles. A one mole contains Avogadro's number of particles. While a molecule is the combination in which the atoms of same or different elements are held together by bonds formed between them.

Complete answer:
In chemistry, we have come across terms like mole and molecules, these terms may be confusing and seem to be the same, but they are different from each other. They have a similarity in one aspect that they consist of atoms. Now let’s look at the role of atoms in both of these terms.
A mole is the measure of a certain number of atoms. The amounts like grams, milligrams can be converted into moles. But mole does not have any unit like gram or milligram as it is the number of atoms. 1 mole of any element or compound contains an Avogadro number of atoms that is $6.022\times {10}^{23}$ atoms.
On the other hand, a molecule is a substance that contains the same or the different atoms of elements. These atoms may be 2 in number then called di – atomic molecule, 3 in number called tri – atomic, or others as poly – atomic molecules. The atoms are held together by chemical bonds formed by sharing or transfer of valence electrons of the atoms. The molecules can be expressed in units of grams, milligrams or even moles. Example,$O_2,S{O_4}^{2-},C{H}_4$ etc.
Hence, the difference between moles and molecules is that a mole is a quantity of $6.022\times {10}^{23}$ particles, while a molecule contains various atoms of elements bonded chemically.

Note:
The fact that the molar mass of any element or compound is expressed in grams per mole is due to the reason that 1 mole of any compound or element contains $6.022\times {10}^{23}$ number of atoms. The bonds between atoms in a molecule can be covalent formed by sharing electrons or ionic formed by transferring electrons.