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The Atom

TermDefinition
Atom The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element
Electrons A tiny, negatively charged particle that moves around the outside of the nucleus of the atom
Nucleus The central core of an atom which contains protons and neutrons
Proton
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 the atom
Atomic number The number of protons on the nucleus of an atom
Isotope An atom with the same numbers of protons and a different number of neutrons from the 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 isotope of an element
Periodic table An arrangement of the elements showing thee repeating pattern of their properties
Chemical symbol A 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; also called family
Created by: 15nozawamas
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