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Atom

Term · Chemistry · MLC-T-CHM-000886

The smallest unit of ordinary matter that forms a chemical element, consisting of a nucleus of protons and neutrons surrounded by a cloud of electrons. It is the fundamental building block of all chemical substances. The diameter of an atom is typically around 10^-10 meters.

Table 1. Record
IdentifierMLC-T-CHM-000886
FieldChemistry
ReferencesRed Book, 3rd ed., p. 35
See alsoChemical element; Elementary charge; Nucleus; Atomic number
Record as JSON 
{
  "id": "MLC-T-CHM-000886",
  "term": "Atom",
  "field": "Chemistry",
  "definition": "The smallest unit of ordinary matter that forms a chemical element, consisting of a nucleus of protons and neutrons surrounded by a cloud of electrons. It is the fundamental building block of all chemical substances. The diameter of an atom is typically around 10^-10 meters.",
  "see_also": [
    "chemical element",
    "elementary charge",
    "nucleus",
    "atomic number"
  ],
  "references": [
    "Red Book, 3rd ed., p. 35"
  ],
  "url": "https://mlchart.com/terminology/chemistry/atom/"
}

Record 954 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.