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THIS.IS.CHAPTER 12!!
physical science chapter 12 vocab. periodic table
| Question | Answer |
|---|---|
| describes something that occurs at regular intervals | periodic |
| the law that states that the repeating chemical and physical properties of elements change periodically with the atomic number of the elements | periodic law |
| in chemistry, a horizantal row of elemnts on the perodic table | period |
| a vertical colun of the elements in the periodic table | group |
| alkali metal | one of the elements of group 1 of the periodic table. lithium, sodium, potassium, rubidum,cesium,and francium |
| one of the elements in group 2. i.e. barium, magnizium, radium, calcium | alkaline-earth metal |
| one of the elements of group 17 of the periodic table. combine with most metals to form salts | halogen |
| one of the elements of group 18 on the periodic table. (helium, neon,argon,kyrpton,xenon,and radom)unreactive. | noble gas |