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science vocab 2.0
| Question | Answer |
|---|---|
| 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 |
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thatsmevile
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