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Stack #504944

chapter 12 vocabulary (periodic tabel)

periodic discribes something that ocours or repets at regular intervals
periodic law the law that states that the repeting chemical and physical properties of elements change periodicaly with the atomic numbers of the elements
period in chemistry a horizantial row of elements in the periodic tabel
group a vertical colume of elements in the periodic tabel; elements in a large group share chemical properties
alkali metals one of the elements of group 1 in the periodic tabel (lithium,sodium,pottasium,rudibium,cesium,and francium)
alkaline-earth metal one of the elements of grooup 2 of the periodic tabel(beryllium,magnisium,calcium,strontium,barium,andradium)
halogen one of the elements of group 17 on the periodis tabel(fluorine,chlorine,borime,and astatine)halogens combine with most metals to form salt
noble gas one of the groups 18 of the periodic tabel(helium,neon,argon,kripton,xenon,and radon)noble gasses are unreactive
Created by: icestar