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																							29
													30
		31																	32										33
							34												35
		36																37
38
		39

Across 8. Involves the transfer of valence electrons (2 Words) 9. A substance made of the same atom or same molecule (2 Words) 11. Postive ion 12. When materials spontanteously decay they become radioactive 18. A mixture not uniform in composition 20. Also known as the Law of Constant Composition (4 Words) 21. Phase change from liquid to solid 23. Highest in the lower left section of the Periodic Table (2 Words) 24. Indefinite shape and definite volume 26. Phase change from solid to liquid 28. The number of electrons in the outermost shell of an atom (2 Words) 29. A substance made of one type of molecule 30. D block (2 Words) 31. Follows the same pattern as ionic radii (2 Words) 32. The amount of time it take for a particle to lose half its mass (2 Words) 34. Results in a helium atom (2 Words) 35. An electron (2 Words) 36. Bonds between metal atoms (2 Words) 37. Phase change from gas to solid 38. Organized in order of atomic number (4 Words) 39. Indefinite shape and indefinite volume

Down 1. Has no mass (2 Words) 2. Matter with more than one molecule 3. Most atoms need 8 valence electrons to be stable (2 Words) 4. Flourine has the most 5. A mixture uniform in composition 6. Negative ion 7. Represent the number of valence electrons in an atom (3 Words) 10. Phase change from liquid to gas 11. Phase change from gas to liquid 13. Mass cannot be created or destroyed (5 Words) 14. Extremely unreactive (2 Words) 15. Phase change from solid to gas 16. About the ratios of masses between different compounds with the same elements (4 Words) 17. Anything that has both mass and volume 19. Affected by electron shielding (2 Words) 22. A substance made of one type of atom 25. Definite shape and definite volume 27. Involves the sharing of valence electrons (2 Words) 33. Group 17 on the Periodic Table