The mole is the SI base unit of amount of substance, used to count discrete entities such as atoms, molecules, or ions in a sample. It bridges microscopic particle counts and macroscopic, measurable quantities of matter.
Facts
SymbolThe 14th CGPM adopted the mole as the seventh SI base unit in 1971; its definition was updated in 2019 by fixing the numerical value of the Avogadro constant. Classification
Quantity Measured Unit SystemInternational System of Units (SI) 1 Connections
Measures Quantity
Used In
Source Redefining the Mole (NIST)
Sources
1. Redefining the Mole (NIST)
National Institute of Standards and Technology (NIST)Lede, quantity measured
The mole is the SI base unit of amount of substance, used to count discrete entities such as atoms, molecules, or ions in a sample.
Lede, unit system
The mole is the SI base unit of amount of substance, used to count discrete entities such as atoms, molecules, or ions in a sample.
- Used In: Chemistry
View the Source Bureau International des Poids et Mesures (BIPM): The International System of Units (SI), 9th edition
Bureau International des Poids et Mesures (BIPM)In Group: Electrical, Thermal, Chemical and Optical Base Units, PDF page 132Quote, In Group: Electrical, Thermal, Chemical and Optical Base Units, PDF page 132
The mole, symbol mol, is the SI unit of amount of substance.
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