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 1. the ratio of a substance's mass to its volume 11. temperature _?_ the solubility of a gas in water 14. the study of matter and its interactions 15. boiling requires heat so it is this 17. those digits in a measurement that you can actually measure plus one estimated digit 21. energy possessed by a rolling ball 22. different forms of the same element 23. the ability to do work or create heat 24. the state of matter that does not have its own shape or volume 25. the kind of property, like size, that doesn't involve a change 27. stored energy 28. ice is _?_ dense than liquid water 30. a representation of something, like a map 31. the phase change when a solid becomes a liquid 32. the apparent "skin" on the top of water is surface _?_ 33. the salt in a salt solution

Down 2. negative particle in the cloud outside the atom 3. the kind of bond in the water molecule 4. the closeness of your answer to the correct answer 5. variable in an experiment that you control 6. a physical property, like color, that is the same no matter how much of a substance you have 7. an educated guess 8. the kind of observation that doesn't include a number 9. the kind of change, like rusting, that creates a new substance 10. temperature scale based upon absolute zero 12. energy from the sun 13. the kind of mixture that is the same throughout 16. a process that separates parts of a mixture based upon solubility 18. mass number is protons plus these 19. the state of matter that has both shape and volume 20. positive particle in the nucleus of an atom 23. matter made up of only one kind of atom 25. the kind of bond that leaves a positive and negative end on a molecule 26. the water in a salt solution 29. anything that has mass and takes up space