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15 terms

Geophysics Chapter 4 Vocab

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An atoms central region which is made of of protons and neutrons
Nucleus
A subatomic partial that has a positive charge and is found in the nucleus of the atom
Proton
A subatomic particle that has a neutral charge and is found in the nucleus of the atom
Neutron
A subatomic particle that has a negative charge and is found orbiting the atom
Electron
A region in an atom where there is a high probability of finding electrons
Orbital
An electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
Valence Electrons
A law that states the repeating chemical and physical properties of an element change periodically with the atomic numbers of the element
Periodic Law
A horizontal row of elements in the periodic table
Period
A vertical column of elements in the periodic table
Group (Family)
An atom or group of atoms that has lost or gained one or more electrons and as a negative or positive charge
Ion
The number of protons in the nucleus of an atom
Atomic Number
The sum of the numbers of protons and neutrons in the nucleus of an atom
Mass Number
An atom that has the same number of protons as other atoms of the same element do but has a different number of neutrons
Isotopes
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