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The atom

TermDefinition
Atom the smallest particle that still can be considered an element
Electrons negatively charged particles
Nucleus the center of an atom
Proton positively charged particles
Energy level The specific amount of energy an electron has
Neutron a particle with no charge
Atomic number the number of protons in the nucleus of an atom
Isotopes atoms with the same amount of protons and different amounts of neutrons
Mass number the sum of protons and neutrons in the atom
Atomic mass the average mass of all the isotopes in that element
Periodic table an arrangement of elements showing the repeating pattern of their properties
Chemical symbol the letter under an atomic number
Periods the rows in a periodic table
Group the elements in a collumn
Created by: 15bondc