Vocab
What is in phisical science, an atom's central reagon
What is a nucleas
What is a subatomic particle that has no change and that is found in the nuclaes of an atom
What is neutron
What is the sum of portrons and neutrons inthe neucleas of an atom
What is mass number
What is the mass of an atom expressed in atomic mass units
What is atomic mass
What is an atom that has the same number portrons (or the same atomic mass unit) as other atoms of the same element do butthat hasa different number of neutrons (and thus a different atomic mass uni
Wat is isotope




Atoms

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