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Periodic Table

Periodic Table of Elements a table showing the chemical elements arranged according to their atomic number
Element a pure substance that cannot be separated into simpler substances by physical or chemical means
Chemical Symbol a one or two letter notation used to represent an atom of a particular element
Atomic Number the number of protons in the nucleus of a single atom
Atomic Mass the mass of an atom, approximately equal to the number of protons and neutrons in the atom
Groups the columns on a Periodic Table that arrange the elements by the number of electrons that are in the outermost shell
Periods the rows in a Periodic Table that classify the elements by the number of electron shells
Metal elements that are typically solid, shiny, malleable, and good conductors of heat and electricity
Non-Metal elements typically not shiny, usually a gas or brittle solid, not malleable, and poor conductors of heat and electricity
Metalloids elements that have properties of both metals and non-metals; sometimes referred to as semiconductors
Noble Gases unreactive non-metals in Group 18 of the Periodic Table
Electron Shell a specific area where electrons of the same energy level are found
Valence Electrons the electrons on the outermost energy level of an atom that influence how an element will react with other substances
Created by: Mrs_Bullock