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Atomic Mass (Simplified) definitions

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  • Atomic Mass
    Average mass of all isotopes of an element, typically found as a non-whole number on the periodic table.
  • Isotope
    Variant of an element with the same number of protons but different numbers of neutrons, affecting its mass.
  • Isotopic Mass
    Specific mass associated with a particular isotope of an element, used in atomic mass calculations.
  • Percent Abundance
    Percentage indicating how much of a particular isotope exists naturally for a given element.
  • Natural Abundance
    Proportion of each isotope of an element as it occurs in nature, often expressed as a percentage.
  • Isotopic Abundance
    Fractional value representing the proportion of a specific isotope, calculated by dividing percent abundance by 100.
  • Fractional Abundance
    Decimal form of an isotope's natural occurrence, derived from its percent abundance.
  • Atomic Number
    Whole number on the periodic table representing the number of protons in an element.
  • AMU
    Unit of atomic mass equal to 1.66 x 10^-27 kilograms, used to express masses of atoms and subatomic particles.
  • Dalton
    Alternative name for the atomic mass unit, commonly used in biochemistry and molecular biology.
  • Periodic Table
    Tabular arrangement of elements where atomic masses and numbers can be found for reference.
  • Grams per Mole
    Unit expressing the mass of one mole of a substance, often used for atomic and molecular masses.
  • Atomic Mass Formula
    Mathematical expression combining isotopic masses and their abundances to calculate average atomic mass.