Chemistry Crossword

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Across
  1. 2. One that has a uniform composition throughout and always has a single phase; also called a solution.
  2. 4. A technique that uses a porous barrier to separate a solid from a liquid.
  3. 7. Anything that has mass and takes up space.
  4. 8. Gaseous state of a substance that is a liquid or a solid at room temperature.
  5. 10. A separation technique that produces pure solid particles of a substance from a solution that contains the dissolved substance.
  6. 12. A characteristic of matter that can be observed or measured without changing the sample's composition
  7. 14. law Relates temperature and volume
  8. 16. A type of change that alters the physical properties of a substance but does not change its composition.
  9. 20. Vertical columns of elements.
  10. 21. A form of matter that has its own definite shape and volume, is incompressible and expands only slightly when heated.
  11. 23. Matter that has the same composition and properties throughout.
  12. 25. A physical blend of two or more pure substances in any proportion in which each substance retains its individual properties; can be separated by physical means.
  13. 26. A chemical substance formed as a result of a chemical reaction.
  14. 27. Relates temperature and pressure.
  15. 28. The majority of elements in the Periodic Table
  16. 29. The amount of matter in an object.
  17. 30. The basic unit of an element.
  18. 31. A form of matter that flows to conform to the shape of its container, fills the container's entire volume and is easily compressed.
  19. 34. law Relates volume and amount of substance.
  20. 36. PV=PV
  21. 37. States that, regardless of the amount, a compound is always composed of the same elements in the same proportion by mass.
  22. 38. A physical property that remains the same no matter how much of a substance is present.
  23. 41. A technique that is used to separate the components of a mixture based on the tendency of each component to travel or be drawn across the surface of another material.
  24. 42. Poor conductors of heat and electricity
  25. 43. PV=nRT
  26. 45. A chemical substance that is present at the start of a chemical reaction.
  27. 46. A pure substance that cannot be broken down into simpler substances by physical or chemical means.
Down
  1. 1. The ability or inability of a substance to combine with or change into one or more new substances.
  2. 3. An extremely unreactive group 18 element.
  3. 5. States that when different compounds are formed by the combination of the same elements, different masses of one element combine with the same mass of the other element in a ratio of small whole numbers.
  4. 6. A physical property, such as mass, length, and volume, that is dependent upon the amount of substance present.
  5. 9. The physical forms in which a substance can exist
  6. 11. One that does not have a uniform composition and in which the individual substances remain distinct.
  7. 13. States that mass is neither created nor destroyed during a chemical reaction but is conserved.
  8. 14. of heat, ductile, malleable, lustrous.
  9. 15. A change from one state (solid or liquid or gas) to another without a change in chemical composition.
  10. 17. A process involving one or more substances changing into new substances; also called a chemical reaction.
  11. 18. Relates temperature, pressure, and volume.
  12. 19. A percentage determined by the ratio of the mass of each element to the total mass of the compound.
  13. 22. A technique that can be used to physically separate most homogeneous mixtures based on the differences in the boiling points of the substances involved.
  14. 24. A change directly from the solid to the gaseous state without becoming liquid.
  15. 32. A chart that organizes all known elements into a grid of horizontal rows (periods) and vertical columns (groups or families) arranged by increasing atomic number.
  16. 33. The horizontal rows on the Periodic Table.
  17. 35. Exists at high temperatures, consists of charged particles.
  18. 39. A chemical combination of two or more different elements; can be broken down into simpler substances by chemical means and has properties different from those of its component elements.
  19. 40. An element that has both metallic and nonmetallic properties; examples of metalloids include B, Ge, Si, and Te.
  20. 44. A form of matter that flows, has constant volume and takes the shape of its container.