Chapter 2

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Across
  1. 1. a bond involving the sharing of electrons netween atoms
  2. 3. protein
  3. 7. a group of atoms bonded together
  4. 11. molecules consist of many nucleotides linked in a long chain.
  5. 12. amino acid
  6. 14. a carbohydrate whose molecules consist of a number of sugar molecules bonded together.
  7. 17. also known as Bohr’s atomic model
  8. 19. Adenosine triphosphate
  9. 20. energy that travels by waves or particles
  10. 22. a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
  11. 23. antibodies is an example of this
  12. 25. spheroproteins
  13. 26. the energy of a body or a system with respect to the motion of the body or of the particles in the system.
  14. 27. Energy form directly involved in putting the matter into motion.
  15. 28. Lack of carbon; compound.
  16. 29. a measure of the hydorgen ion concentration of a solution
  17. 30. also known as Rutherford atomic model
  18. 33. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
  19. 34. A number equal to the sum of all the neutrons and the protons in an atom's nucleus.
  20. 37. A bond that forms when electrons are transferred from one atom to another.
  21. 39. the outermost shell of an atom containing the valence electrons.
  22. 41. a substance that accepts hydrogen ions
  23. 42. a lipid containing a phosphate group in its molecule
  24. 43. a lipid
  25. 44. process in which molecules are formed, changed, or broken down.
  26. 46. Composed of 2 or more elements.
  27. 48. particle with a negative charge
  28. 49. Also known as Electron shells
  29. 52. anything that has mass and takes up space
  30. 53. organic compound composed of carbon, hydrogen, and oxygen; includes starches, sugars, and glucose.
  31. 56. a solution that resists changes in pH when acid or alkali is added to it.
  32. 57. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  33. 58. Basic unit of a chemical element.
  34. 59. electrical charge
  35. 60. A reaction where 2 or more molecules or atoms combine to form a larger and more complex molecule.
  36. 61. acid
  37. 63. another term would be inert energy
  38. 65. a polysaccharide
  39. 66. structure of dna
  40. 67. form the basic structural unit of nucleic acids
  41. 68. a lipid
Down
  1. 2. atomic mass
  2. 4. also known as triglycerides
  3. 5. an example of monosaccharides
  4. 6. Carbon-containing compound.
  5. 8. deoxyribonucleic acid
  6. 9. Positive subatomic particle.
  7. 10. particle with a neutral charge
  8. 12. created in 1869
  9. 13. the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
  10. 15. energy form stored in the bonds of chemicals
  11. 16. a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
  12. 18. a change from one state (solid or liquid or gas) to another without a change in chemical composition
  13. 20. a radioactive isotope.
  14. 21. chemical reaction in which an acid and a base react quantitatively with each other.
  15. 22. A reaction where bonds are broken and combined.
  16. 24. a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances. Creates a new substance.
  17. 31. single sugar
  18. 32. the base
  19. 35. fibrous proteins
  20. 36. letters that represent an element
  21. 38. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  22. 40. any of a class of sugars whose molecules contain two monosaccharide residues.
  23. 45. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei
  24. 47. power
  25. 50. the ionized or ionizable constituents of a living cell, blood, or other organic matter.
  26. 51. A reaction where bonds are broken.
  27. 54. a region on an enzyme that binds to a protein or other substance during a reaction.
  28. 55. one of a class of substances that cannot be separated into simpler substances by chemical means.
  29. 58. a substance that liberates hydrogen ions when in an aqueous solution.
  30. 62. ribonucleic acid
  31. 64. include wax and oil