Across
- 2. inner transition metals found naturally on earth
- 4. very reactive shiny and light weight
- 5. Vertical columns
- 10. good conductors of heat/electricity shiny
- 11. Non-metals easily combine with other elements often metals
- 12. Difficult to explain because of their varying atomic structure.
Down
- 1. second most reactive family Mg and Ca important in diet
- 3. They don't react with other elements
- 6. the number of electrons in the outermost shell
- 7. poor conductors of heat/electricity dull
- 8. all are radioactive some are made in labs
- 9. Mix of both and non-metals shiny and dull