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Stack #504955

chapter 12 vocab-perodic table

Periodic describes something that occurs or repeats at a regular intervals
periodic law the law that states that the repeating chemical and physiacal propeties of elements change periodically with the atomic numbers of the element
Period in chemistry a horizontal row of elements in the periodic table
group a vertical column of elements in a group share chemical properties
Alkali metal one of the elemants of group 1 of the periodic table (lithium,sodium,potassium,rubidium,cesium,and francium)
Alkaline-earth metal one of the elements of group 2 of the periodic table (beryllium,magnesium,calcium,strontium,barium,and radium)
halogen one of the elements of group 17 of the periodic table(fluoribe,chlorine,bromine,iodine,and astatine); halogens combine with most matals to form salts
noble gas one of the elements of group 18 of the periodic table(helium,neon,agron,krpton,xenon,and radon);noble gases are unreactive
Created by: hahaha