Periodic Table, Definition: An arrangement of elements in columns, based on a set of properties that repeat from row to row.
Mendleev used basic playing card to show he periodic table. he put the cards in order from ace to king and by suites. He labled each card with an element to show the periodis table.
Mendleev's arranged the elements into rows in order of the increasing mass so that elements with similar properties were in the same column. The final arrangement was similar to winning a arrangment in solitare exepct the columns were organized by properties instead of suites.
Mendleev could not finish his periodic table because many of the elements that we have today were never discovered. He left many spaces in his table so he had room for the elements to be discovered.
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Period, Definition: Each row in the table of elements.
Group, Definition: Each column on the Periodic Table.
Periodic Law, Definition: The pattern of repeating properties.
Atomic Mass Unit (amu), Definition:
Metals, Definition: Elements that are good conductors of electric current and heat.
Transition Metals, Definition: elements that form a bridge between the elements on the left and the right sides of the table.
Nonmetals, Definition: Elements that are poor conductors of heat and electric current.
Metalloids, Definition: Elements with properties that fall between those of metals and nonmetals.
Valance Electrons, Definition: An electron that is in the highest occupied energy level of an atom.
Alkali Metals, Defintion: The elements that are located in group 1A of the periodic table. This does not in could Hydrogen.
Alkaline Earth Metals, Definition: The elements in Group 2A of the periodic table.
Halogens, Definition: The elements in Group 7A of the periodic table.
Noble Gases, Definition: The elements Group 8A of the periodic table.
Alkali Metals, Lithium (Li), Atomic Number 3, Soduim (Na), Atomic Number 11, Potassium (K), Atomic Number 19, Rubidium (Rb), Atomic Number 37, Cesium (Cs), Atomic Number 55, Francium, Atomic Number 87
Alkialine Metals, Beryllium (Be), Atomic Number 4
Boron Family, Boron (B), Atomic Number 5, Aluminum (Al), Atomic Number 13, Gallium (Ga), Atomic Number 31, Indium(In), Atomic Number 49, Thallium (Tl), Atomic Number 81
The oxygen family, oxygen(o), Atomic number 8, Selenium(se), Atomic number 34, Tellurium(te), sulfer(s), Atomic number 16
Carbon Family, Carbon (C), Atomic Number 6, Silicon (S), Atomic Number 14, Germanium (Ge), Atomic Number 32, Tin (Sn), Atomic Number 50, Lead (Pb), Atomic Number 82
Nitrogen Family, Nitrogen (N), Atomic Number 7, Phosphorus (P), Atomic Number 15, Arsenic (As), Atomic Number 33, Antimony (As), Atomic Number 51, Bismuth (Bi), Atomic Number 83