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Atom Structure Vocab

Vocabulary for Atomic Structure . MEDIUM

TermDefinition
Atom The smallest particle of an element that retains its identity in a chemical reaction.
Electron A negatively charged subatomic particle.
Proton A positively charged subatomic particle.
Neutron A subatomic particle with no charge.
Nucleus The tiny central core of an atom and is composed of protons and neutrons.
Atomic number The number of protons in the nucleus of an atom of an element.
Mass number The total number of protons and neutrons in an atom.
Isotopes Atoms that have the same number of protons but different numbers of neutrons.
Atomic mass A weighted average mass of an atom.
Electron A subatomic particle whose mass is negligible.
Neutron A subatomic particle that has the same mass as proton.
Proton A subatomic particle that has the same mass as neutron.
Created by: Teacher Ida
 

 



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