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A form of matter that cannot be separated into different forms by any physical means
Pure Substance
Two classifications of Pure Substances
Elements and Compounds
The rows in the periodic table
Period
How many are the period in the periodic table of elements?
Seven (7)
Latin Name for Gold (Au)
Aurum
A simplified form of matter that contains only one kind of atom.
Element
Elements are further subdivided into...
Metals, Nonmetals, and Metalloids
The columns in a periodic table
Groups
How many groups are in the periodic table of elements?
Eigtheen (18)
Latin Name for Iron (Fe)
Ferrum
Through this, chemical elements are arranged in a manner that displays periodic trends in the chemical properties of the elements.
Periodic Table of Elements
A notation of one or two letters denoting a chemical element.
Chemical Symbol
The distance between the center of the nucleus to the outer shell of an atom
Atomic Radius
How many are the known elements as of today?
118
Latin Name for Silver (Ag)
Argentum
Who is the creator of the periodic table of elements?
Dmitri Mendeleev
The number of protons found in the nucleus of every atom of that element
Atomic Number
The ability of an atom in a chemical compound to attract shared electrons to itself
Electronegativity
The number of electrons present in the outer shell of an atom
Valency
Latin Name for Sodium (Na)
Natrium
In what year the periodic table of elements was initially created?
1869
The periodic table as we know it today is managed by...?
International Union of Pure and Applied Chemistry, or IUPAC
The amount of energy released when an electron is added to a neutral atom
Electron Affinity
The energy required to remove an electron from a neutral atom.
Ionization Energy
Latin Name for Tin (Sn)
Stannum