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Chap. 9 lessons 2

ss Atoms & Elements

QuestionAnswer
The part of an atom that circles the nucleus and has a negative charge. electron
The parts of an atom that are in the nucleus and have a positive charge. protons
The parts of the atom that are in the nucleus and have no charge neutrons
Everything in th world around you. matter
Small particles inside protons and nuetrons. quarks
The center of an atom that contains the protons and neutrons. nucleus
A pure substance that cannot be broken down into anything simpler. element
All matter is made up of __________________. elements
Elements are made up of _______________. atoms
The heaviest (densest) part of an atom nucleus
The number of protons in the nucleus of an atom determines its ___________________. atomic number
Created by: sspersta
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