Chemistry Vocabulary Final

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Across
  1. 2. ion that consists of two or more atoms bonded together, which collectively have a net charge
  2. 4. negatively charged subatomic particle found outside the nucleus
  3. 6. distance from the nucleus of an ion to the outermost electron after the atom has gained or lost electrons to form an ion
  4. 12. chemical compound consisting of a hydrogen and a carbon
  5. 13. the ability of an atom to attract electrons towards itself when it is part of a chemical bond
  6. 16. deals with quantitative relationships between reactants and products in a chemical reaction; uses a balanced chemical reaction
  7. 17. chemical bond formed when two nonmetal atoms share electrons in order to achieve a full outer electron shell
  8. 18. substance in a chemical reaction that is used up first
  9. 22. pairs of electrons that are shared between two atoms in a chemical bond
  10. 24. solid that forms and separates from a liquid solution during a chemical reaction
  11. 25. amount of space an object takes up
  12. 26. substances that are present at the beginning of a chemical reaction
  13. 32. refers to the region around a central atom where electrons are likely to be found
  14. 33. positively charged ion that has lost electrons
  15. 34. substance made of two or more elements chemically combined in a fixed ratio
  16. 35. number of protons in the nucleus of an atom
  17. 36. pure substance made of only one type of atom
  18. 42. type of chemical reaction in which a compound breaks down into simpler substances
  19. 43. chemical compound formed when two nonmetal atoms share electrons in order to achieve a full electron shell
  20. 44. an ionic compound formed with a metal and a nonmetal
  21. 46. combination of two or more substances physically combined in variable proportions
  22. 48. refers to the emission and transmission of energy in the form of waves or particles when an atoms nucleus decays
  23. 49. 6.022x10^23 particles
  24. 52. process in which reactants are transformed into products through the breaking and forming of chemical bonds
  25. 55. subatomic particle found in the outermost shell of an atom
  26. 56. states that atoms tend to gain, lose, or share electrons in order to have a full outer electron shell
  27. 59. new substances formed from a chemical reaction
  28. 61. molecule that has a net dipole, meaning there is an uneven distribution of electrons
  29. 62. force of attraction that holds atoms together in a compound by either transferring or sharing electrons to become more stable
  30. 64. mixture in which the components are not evenly distributed and composition is not uniform
  31. 66. measure of the efficiency of a chemical reaction, compares actual and theoretical yield
  32. 69. total number of protons and neutrons found in the nucleus of an atom
  33. 70. region of space around the nucleus of an atom where there is a high probability of finding an electron
  34. 71. the amount of energy required to remove one electron from a neutral atom
  35. 72. substance in a chemical reaction that is not completely used up when the reaction is finished
  36. 73. maximum amount of product that can be formed in a chemical reaction, calculated based on the balanced chemical equation and the amount of limiting reactant
  37. 74. chemical reaction in which one element replaces another in a compound
Down
  1. 1. measure of a fluids resistance to flow
  2. 3. the temperature at which a liquid changes to a gas
  3. 5. diagram that shows a representation of valence electrons of an element or molecules represented by dots
  4. 7. chemical compound formed by the electrostatic attraction between cations and anions
  5. 8. chemical reaction in which two or more compounds exchange ions to form two new compounds
  6. 9. used to convert a quantity from one unit to another without changing its value
  7. 10. number assigned to an atom that represents its charge in an ionic compound
  8. 11. conversion factor derived from the coefficients of a balanced equation, showing the ratio of moles between substances
  9. 14. the distance from the nucleus of an atom to the outermost electron shell
  10. 15. positively charged subatomic particle found in the nucleus
  11. 19. a regular, repeating arrangement of atoms, ions, or molecules in a solid
  12. 20. the arrangement of electrons in their most stable form in an orbital
  13. 21. same element with different different number of neutrons
  14. 23. neutrally charged subatomic particle found in the nucleus
  15. 27. mass of one mole of a substance
  16. 28. mixture in which the components are evenly distributed and has uniform composition
  17. 29. building block of all matter
  18. 30. type of chemical reaction in which two or more simple substances combine to form a complex compound
  19. 31. type of chemical bond formed when electrons are transferred from one atom to another,resulting in the formation of cations and anions
  20. 37. chemical reaction that absorbs energy, usually in the form of heat
  21. 38. Pairs of valence electrons that are not involved in bonding with other atoms
  22. 39. elements that naturally exist as molecules composed of two identical atoms bonded together because they are more stable in this form than as individual atoms
  23. 40. used to measure the amount of a substance
  24. 41. anything that has mass and takes up space
  25. 45. refers to the percentage by mass of each element in a compound
  26. 47. atom or molecule with an electric charge because it has gained or lost electrons
  27. 50. amount of matter in an object
  28. 51. weighted average of all the masses of all the naturally occurring isotopes on the periodic table
  29. 52. chemical reaction in which a substance reacts with oxygen to produce carbon dioxide and water
  30. 53. chemical compound containing at least one oxygen atom
  31. 54. measured amount of product obtained from a chemical reaction
  32. 57. chemical reaction that releases energy in the form of heat or light
  33. 58. family on the periodic table that corresponds to the number of valence electrons
  34. 60. sum of the atomic masses of all the atoms in a chemical formula, expressed in amu
  35. 63. horizontal row in the periodic table that corresponds to the number of energy levels
  36. 65. negatively charged ion that has gained electrons
  37. 67. measure of how readily an element or compound undergoes a chemical reaction
  38. 68. molecules that do not have a net dipole, meaning there is an even distribution of charge