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Morgan-Vocab Ch. 12
Periodic Table Terms
| Vocabulary Term | Definition | Pictures |
|---|---|---|
| Periocic Law | the law that states that the repeating chemical and physical properties of elements change periodically with 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 in Group 1 of the periodic table ( lithium, sodium, potassium, rubidium, cesium, & francium) | |
| Alkaline-Earth Metal | one of the elements in Group 2 of the periodic table (beryllium, magnesium, calcium, stronium, barium, & radium) | |
| Halogen | one of the elements in 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, agron, krypton, xenon, & radon); noble gases are unreactive | |
| Periodic | describes something that occurs or repeats at regular intervals |