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science vocab 2.0

QuestionAnswer
the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights. periodic law
In the Periodic Table, any of the seven horizontal rows that contain elements arranged in order of increasing atomic number period
In the Periodic Table, a vertical column that contains elements having the same number of electrons in the outermost shell of their atoms group
an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons ion
an element that is shiny and conducts heat and electricity well metal
element that conducts electricity and heat poorly and doesnt for positive ions nonmetal
an element or compound that conducts electric current better than an insulator does but not as well as a conductor does semi-conductor
an element that has both metallic and nonmetallic properties metalloid
the isotopes, collectively, that comprise a radioactive series family
any of the group of univalent metals of the elements of the group 1 of the periodic table alkali metal
any of the monovalent metals of group I of the periodic table alkaline metal
less soluble than those of the alkali metals any of the group of bivalent metals alkaline earth metal
one of the metals that can use the inner shell before using the outer shell to bond transition metal
any of the chemically inert gaseous elements of group 8A or 0 of the periodic table noble gasses
any of the electronegative elements that form binary salts by direct union with metals. halogen
Russian chemist: helped develop the periodic law. Mendeleev
any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence Rare earth metals
rare-earth element any element of the lanthanide series lanthanide
the series of radioactive elements that starts with actinium and ends with lawrencium actinide series
any of the elements oxygen, sulfur, selenium, tellurium, and polonium, which form the VIa group in the periodic table. chalogens
Created by: thatsmevile
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