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- The number of protons and neutrons in an atom equals the atomic mass. Weight is the amount of force necessary to accelerate an object with mass, while volume is the space occupied by matter. Both weight and volume are dependent on the amount of matter (mass) in an object, but they’re also limited by other factors.
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Why does atomic mass change with atomic weight?
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Jul 1, 2019 · The atomic weight can change because it depends on our understanding of how much of each isotope of an element exists. Both atomic mass and atomic weight rely on the atomic mass unit (amu), which is 1/12th the mass of an atom of carbon-12 in its ground state.
- Anne Marie Helmenstine, Ph.D.
Mar 13, 2018 · Weight, or W, is a product of mass or M and gravity or G, which leads to the following equation: W = M & G. In addition, mass and volume -- V -- are related by density or D, which measures the mass of a substance per unit volume via the following equation: D = M/V.
- Vivek Saxena
Atomic mass is expressed in atomic mass units (amu) or unified atomic mass units (u), whereas atomic weight is a dimensionless ratio. Atomic mass is a property unique to each element, while atomic weight is a value that can vary depending on the abundance of isotopes.
Aug 11, 2022 · Mass is commonly confused with weight. The two are closely related, but they measure different things. Whereas mass measures the amount of matter in an object, weight measures the force of gravity acting on an object.
Feb 25, 2021 · Atomic mass is calculated by measuring the masses of protons, neutrons, and electrons of the atom. Atomic weight is calculated by determining the percentage abundance of all the isotopes of a chemical element. Atomic mass doesn’t depend on the isotopic mass of different isotopes of an element.
Atomic weight can be defined as the average weight of an element with respect to all its isotopes and their relative abundances. Atomic mass is independent of the atomic masses of isotopes. Atomic weight is dependent upon the atomic mass of isotopes and their abundance.
Understanding the difference between mass and weight is essential in grasping fundamental scientific concepts. In the context of atoms, ‘atomic mass’ is a more accurate and preferred term, reflecting a universal and gravity-independent property of atomic particles.
