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Chapter12vocab
vocab from chapter 12.
| Question | Answer |
|---|---|
| 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 | one of the elements of Group 1 of the periodic table(lithium,sodium,potassium,etc.) |
| Alkaline-earth metal | one of the elements in Group 2 of the periodic table(berylium,magnesuim,etc.) |
| Halogen | one of the elements of Group 17 of the periodic table(fluorine,chlorine,iodine,etc.) |
| Noble Gas | one of the elements of Group 18 of the periodic table(helium,neon,etc.) |