1				2		3		4
5				6
								7
						8
				9				10

Across 2. metal + non-metal = ..... bond 5. ....... electrons are in the outermost energy shell 7. Metallic bonding involves electrons forming a ... of electrons 9. Another word for structure

Down 1. A covalent substance found in sand 3. The symbol on the periodic table for Sodium 4. non metal + non metal = ........ bond 6. Where the protons and neutrons are 8. A Noble Gas (Group 0) are ...... 10. An atom that has gained or lost electrons