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

Across 2. element that makes up living things 7. oxygen supports this chemical process 9. substance commonly found in all 3 states naturally on Earth 11. hydrogen reacts vigorously with this element 12. chlorine can ____ living cells 14. gas can be formed from burning C in the air 17. sodium is this color 18. system of the body that requires the sodium in salt 19. Na 21. Cl 23. process in plants that release O2 and take in CO2 25. many ____ occur in water 28. use of salt to help keep food good 29. sodium chloride 30. group of elements that carbon belongs to 31. color of chlorine

Down 1. salt is ___ in water 3. sodium reacts violently with this element 4. water makes of 70% of this 5. chlorine has a terrible ____ 6. chemical name of water 8. most common gas in our atmosphere 10. hydrogen is the most abundant element in ____ 13. water dissolves many different substances, that makes is this 15. carbon will react at high ___ 16. type of solid of salt 20. chlorine is a ____ gas 22. chemically, salt is ___ 24. the lightest element 26. the crystal structure of salt 27. CO2 is not very reactive, therefore is is relatively ____