Chapter 2

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