Mole concept

The mole concept is a way chemists count very small particles like atoms and molecules. Since these particles are extremely tiny, a mole represents a specific number—6.022×10²³—called Avogadro's number. One mole of a substance contains this many particles, whether it's atoms of gold or molecules of water. This makes it easier to relate mass and number of particles, helping chemists measure and compare substances accurately. Essentially, the mole acts as a bridge between the microscopic world of particles and the macroscopic quantities we can handle in the lab.