Define the mole concept

 Define the mole concept:

• The mole concept is a unit used in chemistry to measure the amount of a substance. 
• One mole of a substance is defined as the amount of a substance that contains the same number of entities as there are in 12 grams of carbon-12. 
• The entities can be atoms, molecules, ions, or other particles.
• The mole concept is used to calculate the number of particles in a given amount of a substance, as well as to convert between mass, moles, and number of particles. 
• The mole is a convenient unit because it allows chemists to work with large numbers of particles without having to count each one individually.