Periodic Table Crossword
Across
- 3. he total weight of an atom is called the atomic weigh
- 7. a tabular array of the chemical elements organized by atomic number
Down
- 1. chemical nomenclature is a set of rules to generate systematic names for chemical compounds
- 2. Chemical symbols are the abbreviations used in chemistry for chemical elements
- 4. the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus.
- 5. n chemistry, a nonmetal is a chemical element that generally lacks a predominance
- 6. valuable primarily because they are radioactive