1	2											3
		4					5
										6
																7							8
					9
		10																							11
										12								13
14
								15			16
	17
					18
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20
																	21		22
							23
											24

Across 1. created by a gas as the particles bounce against the container 4. a substance formed in a chemical reaction 6. the smallest particle of an element that retains the properties of that element 9. as one goes down the other one goes down one goes up the other one goes up 12. 2 or more substances combine to form a single substance 14. PV=nRT 16. P1V1/T1=P2V2/T2 17. A matter that has no definite shape or volume 18. the changing of substance to other substances by breaking of bonds in reactants and the formation of 19. a neutral chemically bonded group of atoms that act as a unit 20. The Space occupied by a sample of matter 22. A form of matter that flows, has fixed volume 23. a chemical change in which one element replaces a 2nd element in a compound 24. P1/T1=P2/T2

Down 2. A starting substance in a chemical reaction 3. an expression representing a chemical reaction 5. V1/T1=V2/T2 7. A Chemical change in which oxygen reacts with another substance often producing energy in the form of heat 8. as one goes up the other goes down and vice versa 9. a chemical change in which that involes an exchange of positive ions between two compounds 10. P1V1=P2V2 11. A measure of the average kinetic energy of particles in matter 13. Matter that has a definite shape and volume 15. a chemical change in which a single compound is broken down into 2 or more simpler products 21. 6.02 x 1023