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Chapter12vocab
physical
| 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 orizantal row of elements in the periodic table. |
| group | each vertical column of elements on the periodic table. |
| Alkali metals | an element in group 1 on the periodic table. |
| alkaline-earth metal | an element in group 2 on the periodic table. |
| Halogen | one of the elements in group 17 on the periodic table. |
| Noble gas | one of the elements in group 18 in the periodic table. |