Across
- 4. a negative charge
- 6. do not form bonds in group 8 and have 8 valence electrons
- 8. an element that have some property of metal and nonmetal combined
- 10. group 2 and have 2 valence electrons
- 11. horizontal row in a periodic table
- 12. the number of protons in one atoms
- 13. located in group 7 contain nonmetal and have 7 valence electrons
- 15. A bond formed between two non metal elements
Down
- 1. A bond formed between two metal element
- 2. A positive charge
- 3. elements that does not conduct electricity and gas at a room temperature
- 5. the electrons in the outer most shell
- 7. elements or substance that very good in conduct electricity
- 9. group 1, 1 valence electrons in outer level and very reactive, shiny,silver
- 14. vertical column in the periodic table