Across
- 2. Alkali ______ can be cut through easier than other metals.
- 5. ______ is not found in nature.
- 8. All the members of a family of elements have the same number of valence __________.
Down
- 1. _______ arranged the modern periodic table.
- 3. Alkaline earth metals react with ______ and water to form salts.
- 4. Alkaline Earth metals have a mostly ______ color.
- 6. The _______ columns on the periodic table are called groups or families.
- 7. There are ______ groups on the periodic table.