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Atoms

Atoms and the periodic table

TermDefinition
Atoms Smallest particle into which an element can be divided and still be the same element
Electron Negatively charged particles inside atoms
Nucleus Small, dense center that has a positive charge
Proton Positively charged particles in the nucleus
Neutron Uncharged particles in the nucleus
Electron cloud The area where the electrons move around the nucleus
Atomic Number The number of protons in the nucleus of an atom
Mass Number The total number of protons and neutrons in an atoms' nucleus
Periodic Table Arrangement of elements in a table
Chemical Symbol Abbreviation for the element's name
Average atomic mass The weighted average of the masses of all the naturally occurring isotopes of that element
Metal Elements that are shinny and conducts electircity well
Nonmetal Poor conductors of heat and electricity
Metalloid Elements that have some properties of metals and nonmetals
Group Each vertical column of elements on a periodic table
Peroid Each horizontal row of elements on a periodic table
Created by: 18RobinsonR0811
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