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Atomic Structure

negatively charge particles that orbit the nucleus electron
A pure substance with only one kind of atom element
the center of the atom nucleus
positively charged particle found in the nucleus proton
has no charge and found in the nucleus neutron
represents the number of protons in an atom atomic number
equal to the number of protons + number of neutrons atomic mass
space where electrons are found energy shell or electron orbital
a horizontal row in the periodic table period
the smallest atomic particle electron
the atomic number represents the number of __________ protons
To find the number of neutrons, subtract the number of ___________ from the atomic mass. protons
When calculating the number of neutrons, you must first _______ the atomic mass up or down to the nearest whole number round
In a neutral atom the number of protons is equal to the number of __________ electrons
A substance made up of more than one type of element compound
Created by: scienceeagle