chemistry

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Across
  1. 1. this base has a ph of 12 and is used for cleaning in the house.
  2. 5. chemical bonding that results from the electrical attraction between large numbers of cations and anions
  3. 7. are the 14 elements with atomic numbers from 58 to 71
  4. 9. Avogadro's number
  5. 10. indicates the relative numbers of atoms of each kind in a chemical compound by using atomic symbols and numerical subscripts.
  6. 11. is a strong acid that has a pH level of 4.0-4.4
  7. 13. is a small whole number that appears in front of the formula in a chemical equation.
  8. 17. a solid that is produced as a result of a chemical reaction in solution and that separates from the solution
  9. 18. the decomposition of a substance by an electric current.
  10. 21. moles--->moles
  11. 23. compound a chemical compound whose simplest units are molecules.
  12. 27. is an arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group.
  13. 29. prefix for one
  14. 30. prefix for Three
  15. 32. a reaction in which a substance combines with oxygen, releasing a large amount of energy in the form of light and heat.
  16. 33. prefix for two
  17. 35. are the 14 elements with atomic numbers from 90 to 103.
  18. 36. is a list of elements organized according to the ease with which the elements undergo certain chemical reactions.
  19. 37. is the amount of space occupied by an object.
  20. 38. the physical and chemical properties of the elements are periodic functions of their atomic numbers.
  21. 39. refers to the closeness of measurements to the correct or accepted value of the quantity measured.
  22. 40. is a strong acid that has a pH level of 2.2-2.4
  23. 41. one element replaces a similar element in a compound.
  24. 42. anything that has mass and takes up space.
  25. 46. is the amount of a substance that contains as many particles as there are atoms in exactly 12g of carbon-12.
  26. 49. Synthesis
  27. 50. a single compound undergoes a reaction that produces two or more simpler substances.
  28. 51. the elements of Group 1 of the periodic table
  29. 52. formula used to calculate molar mass
  30. 55. used to find heat of fusion of water
  31. 56. is a strong acid that has a pH level of 2.4-3.4
  32. 57. is a strong acid that has a pH level of 2.0-4.0
  33. 58. also known as a composition reaction, two or more substances combine to form a new compound.
  34. 60. the mass of one mole of a pure substance.
  35. 62. is the number of protons in the nucleus of each atom of that element.
  36. 63. is a base that has a pH level of 7.6-8.0
  37. 64. is a characteristic that can be observed or measured without changing the identity of the substance.
Down
  1. 2. is a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data.
  2. 3. is a measure of the amount of matter.
  3. 4. Equation used to find heat transfer
  4. 6. prefix for Five
  5. 8. is a neutral group of atoms that are held together by covalent bonds.
  6. 12. formula in which to find Density
  7. 14. what property does baking soda with a ph of 9 fall under?
  8. 15. results from the sharing of electron pairs between two atoms.
  9. 16. in a measurement consist of all the digits known with certainty plus one final digit, which is somewhat uncertain or is estimated.
  10. 19. is a ratio derived from the equation between two different units that can be used to convert from one unit to the other.
  11. 20. the dissolving medium in a solution
  12. 22. mass---->moles
  13. 24. is a substance that is made from the atoms of two or more elements that are chemically bonded.
  14. 25. a change in a substance that does not involve a change in the identity of the substance.
  15. 26. is a mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together.
  16. 28. is a base that has a pH of 8.0-8.5
  17. 31. the smallest particle of an element that retains the chemical properties of the element.
  18. 34. atoms of the same element that have different masses.
  19. 43. the elements of Group 2 of the periodic table.
  20. 44. is the study of composition, structure, and properties of matter and the changes it undergoes.
  21. 45. is a base that has a pH level of 7.3-7.5
  22. 47. prefix for Ten
  23. 48. formula uses to find pOH.
  24. 52. is the total number of protons and neutrons in the nucleus of an isotope.
  25. 53. is a strong acid that has a pH level of 3.0-4.0
  26. 54. refers to the closeness of a set of measurements of the same quantity made in the same way.
  27. 59. Formula used to find the pH.
  28. 61. the substance dissolved in a solution