section_path: Modern principles/Matter/Mole and amount of substance
section_name: Mole and amount of substance
paragraph_text: Mole and amount of substance
  
  The mole is a unit of measurement that denotes an amount of substance (also called chemical amount). One mole is defined to contain exactly 6.022 140 76 × 10 particles (atoms, molecules, ions, or electrons), where the number of particles per mole is known as the Avogadro constant. Molar concentration is the amount of a particular substance per volume of solution, and is commonly reported in mol/ dm.