The terms "gram atoms" and "atomic mass" are related but represent different concepts:
Gram Atom: A gram atom (also known as a mole) is a unit used in chemistry to quantify the amount of a substance. It represents the amount of a substance that contains Avogadro's number (6.022 × 10^23) of atoms or molecules. For example, one gram atom of carbon is equal to 6.022 × 10^23 carbon atoms.
Atomic Mass: Atomic mass refers to the mass of a single atom of an element. It is typically expressed in atomic mass units (u) or unified atomic mass units (u). Atomic mass represents the total mass of protons, neutrons, and electrons in an atom. The atomic mass of an element is usually listed on the periodic table, and it is the weighted average mass of the naturally occurring isotopes of that element.
In summary, gram atoms (moles) are used to measure the amount of a substance, while atomic mass is a property of individual atoms and represents the mass of a single atom of an element.