An atoms central region which is made of of protons and neutrons
A subatomic partial that has a positive charge and is found in the nucleus of the atom
A subatomic particle that has a neutral charge and is found in the nucleus of the atom
A subatomic particle that has a negative charge and is found orbiting the atom
A region in an atom where there is a high probability of finding electrons
An electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
A law that states the repeating chemical and physical properties of an element change periodically with the atomic numbers of the element
A horizontal row of elements in the periodic table
A vertical column of elements in the periodic table
An atom or group of atoms that has lost or gained one or more electrons and as a negative or positive charge
The number of protons in the nucleus of an atom
The sum of the numbers of protons and neutrons in the nucleus of an atom
An atom that has the same number of protons as other atoms of the same element do but has a different number of neutrons
A unit of mass that describes the mass of an atom or molecule
Atomic Mass Unit (amu)
The weighted average of the masses of all naturally occurring isotopes of an element
Average Atomic Mass Unit
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