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

Across 3. identifies the number and element of each type of atom in a compound 12. substance when more than one element is chemically bonded together 14. most of the elements on the periodic table are these 15. Bond where atoms "share" electrons with another atom 16. element with the atomic number of 34 20. an alloy made by combining iron and carbon 21. indicates the charge of an atom when an electron is gained, lost or shared 22. the largest amount of electrons the 2nd energy level of an atom can hold 25. element that has 11 electrons 28. has 6 valence electrons and 16 protons 29. These elements do not react or bond with other elements 30. element which has an atomic mass of 63.54 31. This family all have 7 valence electrons 32. a material that slows or stops the flow of heat or electricity 33. a row in the periodic table

Down 1. Bond where atoms "transfer" electrons to other atoms 2. the electrons found in the outermost shell of an atom 4. metal that is in liquid state at room temperature 5. These touch the staircase in the periodic table and have properties of metals and nonmetals 6. last element in the fourth period 7. Atoms that gain electrons and have a negative charge 8. NaCl is an example of a chemical ________________ 9. number of protons in the nucleus of an atom is also know as this 10. elements that are poor conductors of heat and electricity 11. Atoms that lose electrons and have a positive charge 13. elements located in the first group on periodic table 17. elements that are typically shiny and good conductors of heat and electricity 18. a material that allows heat and electricity to flow thorugh easily is known as a(n) 19. The outermost energy shell of an atom 23. Atoms with either a (+) or (-) eletrical charge 24. Period 4, group 13 26. a group of atoms held together by a covalent bond is this (water is an example) 27. a column in the periodic table