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Across 1. the ability of a solid to be hammered without shattering 5. a type of change that occurs when a substance reacts and forms one or more new substances (2 Words) 6. Mg 7. any solid that forms and separates from a liquid mixture 9. a change that occurs when some of the properties of a material change, but the substances in the material remain the same 10. a production of a ____ is a clue that a chemical change may have taken place 13. a material's property that is its ability to burn in the presence of oxygen 15. any characteristic of a material that can be observed or measured without changing the composition of the substances in the material (2 Words) 18. a material's ability to allow heat to flow 20. a type of mixture where the parts of the mixture are noticeably different from one another 21. O 22. Cl 23. a homogeneous mixture that contains some particles that are intermediate in size between smaller particles 26. a process that separates materials based on the size of their particles 28. H 29. the tendency of a liquid to keep from flowing 31. the ratio of the mass of a substance to its volume 37. one or two letters that are used to represent elements 38. another term for a homogeneous mixture 39. Si 40. a change in ____ is a clue that a chemical change may have taken place

Down 2. the temperature at which a substance changes from liquid to gas (2 Words) 3. a type of property that can produce a change in the composition of matter (2 Words) 4. a process that separates the substances in a solution based on their boiling points 8. Fe 11. a heterogeneous mixture that separates into layers over time 12. the temperature at which a substance changes from solid to liquid (2 Words) 14. Ca 16. a type of mixture where the parts are evenly distributed and it is difficult to distinguish one substance from another 17. matter that has exactly the same composition 19. the property that describes how readily a substance combines with other substances 24. Ag 25. the smallest particle of an element 27. N 30. a substance that is made from two or more simpler substances in a fixed proportion and can be broken down into those simpler substances 32. a substance that is composed of only one type of atom and cannot be broken down into simpler substances 33. C 34. a blend of two or more substances that retain their original properties 35. Na 36. S