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MC physical science
Chapter 12 Vocab (periodic table)
| Vocabulary Term | Definition |
|---|---|
| periodic | describes something that occurs or repeats at regular intervals |
| periodic law | the law that states that the repeating chemical and physical properties of element 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 2of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium) |
| halogen | one of the elements of Group 17 of the periodic table (fluoride, 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 |
Created by:
hippogirl33
on 2010-11-17