1					2				3
						4		5				6					7
					8
														9
			10						11
					12						13
14																					15
											16
					17																18
																19
		20
																							21
22							23						24
					25
												26
27										28

Across 1. pin 8. bonding between atoms of 7 molecules 13. 1st electron cloud 15. measures size of an object 17. no shape no volume 20. outer shell of an atom 21. basic unit of structure 22. which two pairs of electrons are shared between two atoms. 25. a leedle 26. positively charge particle in an atom 27. mesurement 273 28. dirty

Down 2. negative charge 3. explain property of gases 4. neutral charge particle in an atom 5. no shape has volume 6. has shape and volume 7. 3 pairs of electrons share between 2 atoms 9. 2nd electron cloud 10. set of chemical symbols 11. 1 pair of electrons share between 2 atoms 12. its a reaction of displacement 14. two or more separate elements 16. inside atom 18. v1/t1=v2/t2 19. atoms bond together 23. p1 v1= p2 v2 24. 3rd electron cloud