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
					40					41
	42
																					43
	44
																				45
	46

Across 1. The number of protons an element has (2 words) 6. Prefix that means 5 8. Number of electrons that can fit in the 3rd energy level 12. ________ energy is the energy needed to start a reaction 14. Wavelengths of light specific to an element that has been heated to the point of glowing ___ spectrum 15. 1 molecule becomes 2 molecules 17. Average weight of an element (2 words) 18. Group 1 19. A molecule that has a partial charge is 21. Type of solution that conducts electricity 23. When 2 chemicals become 1 25. Mass number of an atom with 3P+, 4N, 5e- 26. Solution that can't dissolve any more solute is 31. Distance from nucleus where an electron can be found (2 words) 34. Electrons are transferred from one atom to another in this type of bond 35. ________ formula is the simplest ration of elements in a molecule 36. Element with a specific number of neutrons 38. Part of an atom discovered using cathoderay tubes 40. What's being dissolved 43. KOH is one because it produces OH- when added to water 44. Moles / liters 45. type of radiation if U-238 turns into Np-238 46. A solution with a pOH of 12

Down 1. Type of radiation that ejects 2 P+ and 2 N 2. _____ number is written after an isotope OR up and in front of it 3. Measure the attraction an element has for electrons of other atoms 4. The farthest out electrons an atom has are called __________ electrons 5. Were discovered by the gold foil experiment 7. When one atom splits into two atoms 9. Energy needed to remove an electron from an atom is call its ______ energy 10. The _______ number is the charge an atom has 11. Keq is the symbol for the _____________ constant of a reaction 13. Names of chemicals with this type of bond get prefixes 16. These elements do not react with any other elements (2 words) 20. Heat of ________ is the energy need to change a solid into a liquid 22. When a reaction gives off more heat than was put into it 24. Prefix for the number four 27. The isotope a radioactive element turns into 28. Heat tends to _______ the solubility of a chemical 29. Element that calcium wants to be like 30. Elements down and to the left of the periodic table have a large 32. Group 17 33. Substance that speeds up a reaction but ends up back in its original form 37. Biological catalyst 39. Group 9, Period 4 41. Number of neutrons carbon-14 has 42. Type of radiation that emits electromagnetic waves