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The Atom

TermDefinition
Atom The smallest particle from which all elements are made
Electron A tiny, negatively charged particle that moves around the outside of the nucleus of an atom
Nucleus The central core of an atom which contains protons and neutrons
Proton Small, positively charged particles that are found in the center of an atom
Energy Level A region of an atom in which electrons of the same energy are likely to be found
Neutron A small particle in the nucleus of an atom with no electric charge
Atomic Number The number of protons in the nucleus of an atom
Isotope Atoms with the same number of protons and different neutrons from other atoms of the same element
Mass Number The sum of protons and neutrons in the nucleus of an atom
Atomic Mass The average mass of all the isotopes in an element
Periodic Table An arrangement of the elements showing the repeating pattern of their properties
Chemical Symbol One or two letter representation of an element
Period A horizontal row of elements in the periodic table.
Group Elements in the same vertical column of the periodic table
Created by: princesssara9759
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