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

Across 5. Name of the alkali formed when ammonia react with water 6. High pressure favours the side of the reaction with _____________ moles 8. ________ temperatures favour the exothermic direction of a reaction 9. Acid needed to make ammonium sulfate 11. First stage in making nitric acid produces this gas with formula NO. 13. Use of ammonia in farming 17. A term to describe heat loss in the reaction 20. A gas needed to make ammonia 22. Pressure required for the Haber Process 25. Caused by fertilizers leaching into streams and rivers causing algae to grow rapidly using up oxygen 27. We test for ammonia gas with damp __________ paper which turns from ______(colour 1) to _____(colour 2) 31. Describes the pH of ammonia gas 32. These ions make a solution alkaline 34. Describes a property of ammonia shown by 'skull and cross bones' 35. Which, of the conditions for ammonia production, must be high to give a high yield?

Down 1. A gas found in abundance in the air,needed to make ammonia 2. Temperature required for the Haber Process 3. Which, of the conditions for ammonia production, must be low to give high yield? 4. This has the formula NH3 7. salt formed when ammonia reacts with nitric acid 10. Name of the metal catalyst needed in the Haber Process 12. In the second stage of making nitric acid ,NO is __________to nitrogen dioxide NO2 by adding oxygen 14. colour 1 (See qu on test for ammonia) 15. Source of hydrogen gas for making ammonia which is a hydrocarbon 16. Describes type of reaction between nitric acid and ammonia 18. element needed by plants for good root growth - symbol P 19. Source of Hydrogen for the Haber Process 21. Nitrogen fertilizers are often used as they are ______________ in water 23. Name of an acid made form ammonia 24. Adding more catalyst for the reaction does not alter this? 26. Element needed by flowers and fruits for healthy growth - symbol K 28. In the last stage of making nitric acid, ____________ is added. 29. colour 2 (See qu on test for ammonia) 30. A alck of nitrogen in soil causes leaves to turn this colour 33. Initials often seen on packs of fertiliser showing the key elements needed by plants