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4.2 Chemistry

Vocabulary Words

QuestionAnswer
proton positively charged subatomic particle that is found in the nucleus of an atom
electron negatively charged subatomic particle that is found in the space outside the nucleus
neutron neutral subatomic particle that is found in the nucleus of an atom
atomic number unique number for each element that equals the number of protons in an atom of that element
mass number sum of the number of protons and neutrons in the nucleus of an atom
isotopes atoms of the same element that have different numbers of neutrons and different mass numbers
Created by: MarieElyn
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