Across
- 2. The table developed to organize elements based on patterns in their properties.
- 4. Elements in the same group share similar ____.
- 6. A reactive metal that produces heat and sparks when mixed with water.
- 7. A nonmetal that appears on the left side of the periodic table.
Down
- 1. Elements that exhibit properties between metals and nonmetals.
- 3. The horizontal rows in the periodic table.
- 5. The number of elements in the 1st period of the periodic table.
- 8. The term for a vertical column in the periodic table.