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chap 12 cool

chapter 12 vocab

QuestionAnswer
periodic describes somthing that occurs or repeats at regular intervals.
periodic law the law that states the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements.
group a vertical column of elements in the periodic table; elements in a group share chemical properties.
periodic describes somthing that occurs or repeats at regular intervals.
periodic law the law that states the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements.
period in chemistriy, a horizontal row of elements in the periodic table.
alkali metal one of the elements group 1 of the periodic table ( lithium, sodium, potassium, rubidium, cesium, and francium ).
alkaline-earth metal one of the elements group 2 of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium )
halogen one of the elements group 17 of the periodic table ( fluorine, chlorine, bromine, iodine, and astaine ); halogens combin with most metals to form salts
noble gas one of the elements group 18 of the periodic table ( helium, neon, argon, krypton, xeon, and radon ) ; noble gases are unreactive
Created by: tragclone
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