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Across 1. To observe a chemical property of a substance, you must TRY to _______________it to another substance. 6. _________________ is the study of the properties of matter and how it behaves. 9. Salt and sulfur can easily be separated by dissolving the salt in water and then using_________________ to separate the sulfur which cannot go through a filter while the dissolved salt can. 10. The amount of space matter occupies is called ________________ . 11. (Two words no space) The chemical formula for ______________ __________________is CO2 13. The parts of a mixture are not combined in a set _________________. 14. Soilds, liquids, and even _______________ have volume. 17. The parts of a mixture keep their ____________________ properties. 18. Using _______________, heated salt water can be separated into water and solid salt by EVAPORATING the water leaving the salt behind. 19. Physical state, texture, color, and flexibility are Physical ________________ (charactistics) of matter. 20. The substances in a _______________ mixture are so evenly mixed that you can't see the different parts. 22. __________________ relates the mass of a material in a given volume. It is a physical property of matter. 23. ________________, zinc, copper, oxygen, and nitrogen are elements. 25. When atoms combine to form larger particles called ______________________ they are held together by chemical bonds. 26. A ___________________property is a characteristic of a pure substance that describes its ability to change into different substances. 31. Whether or not a substance __________________ in water is a physical property. 33. A compound may be represented by a chemical __________________. 35. __________________ , texture (rough or smooth), and color are physical properties of matter. 39. Weight changes with __________________ but mass does not. 40. ____________________is anything that has mass and takes up space (volume). 43. A _________________ is 1000 times smaller than a kilogram 44. Some metals are ________________. This is a physical property of matter which means they can be bent into shapes without breaking. 46. A ______________ is made of two or more substances- elements, compounds, or both- that are together in the same place but not chemically combined. 47. A common unit of volume is the ________________ . 50. A _____________property is a characteristic of a pure substance that can be observed without changing it into another substance. 52. _____________ and a salad are examples of heterogeneous mixtures. 53. The ability of silver to react with sulfur in air (or _______________) is an example of a chemical property.

Down 2. In a ____________________ mixture you can see the different parts. 3. An ________________ is the basic particle from which all elements are made. 4. Wood fuels a fire, producing heat, gases, and ash. This chemical property of matter is called _______________________. 5. To determine density _____________the mass of an object by its volume. 7. The _________________System of Units is used by scientists to measure the properties of matter. 8. Objects less dense than water _______________ on water. 12. When atoms combine, they form a chemical ______________, which is a force of attraction between two atoms. 15. ____ is the abbreviation for the International System of Units. 16. An ________________ is a pure substance that cannot be broken down into any other substance by chemical or physical means. 21. The _________________ and the cubic centimeter measure small volumes. 24. The ability to _________ at a certain temperature is a phyical property because it is the same substance whether it is a solid or liquid. 26. A ___________________ is a pure substance made of two or more elements chemically combined in a set ratio. 27. Two physical properties of metals are their luster (shiny) and their ability to _________________heat and electricity. 28. The formula for determining volume of a rectangular prism is___________________ (use the first letter of each word and the symbol for multiply. 29. __________________ has a density of 1 gram per cubic centimeter. 30. A ________________ of sugar and water is a homogeneous mixture. 32. A _________________ is a single kind of matter that is pure, meaning it has a specific makeup- or composition- and a specific set of properties. 34. ___________ floats on vinegar because it is less dense than vinegar. 36. The ability _______ to change is a chemical property as well as the ability to change. 37. __________________ attraction can easily separate a mixture of iron filings and sulfur. 38. _________________ is a measure of the FORCE OF GRAVITY on you or anything other matter. 40. _________________ is the measurement of the AMOUNT OF MATTER in an object. 41. The ______________________ is an SI unit of mass. 42. When you multiple numbers, you also need to multiply the accompanying _____________ . 45. ______________ is a solid solution of copper and zinc. 48. The ability of a substance to react, such as when iron reacts to oxygen to form _________ on a shiny car is a chemical property. 49. Objects more dense than water ______________ in water. 50. The wor ___________ substance, means the substance has a specific makeup- or composition- and a specific set of properties. 51. ____________ is a solution of two gases, oxygen and nitrogen.