chapter 12 vocab. periodic table
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| periodic | describes something that occurs or repeats at regular intervals | ||||
| periodic law | the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements | ||||
| period | in chemistry, a horizontal row of elements in the periodic table | ||||
| group | a vertical column of elements in the periodic table; elements in a group share chemical properties | ||||
| alkali metal | one of the elements 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 (berylium, magnesium, calcium, strontium, and radium) | ||||
| halogen | one of the elements of group 17 of the periodic table (fluorine, chlorine, bromine, iodine, and astatine); halogens combine with most metals to form salts | ||||
| noble gas | one of the elements of group 18 of the periodic table (helium, neon, argon, krypton, xenon, and radon); noble gases are unreactive |
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Created by:
brennalangan
on 2010-11-17