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Introduction to chemistry - (copy)

This activity will help you learn some basic chemistry.
AB
protonhas a positive charge, found in the nucleus, has a mass of 1 AMU
electron has a negative charge, found in specific shells, has a mass of 0.005 AMU
neutronhas no charge, found in the nucleus, has a mass of 1AMU
atomic massthe mass on one atom of an element
atomic numberthe number of protons in an atom
moleculemade of atoms
nucleuscontains most of the mass of an atom
cells the smallest unit of life, made of molecules

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