Chp. 2 Biochemistry

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Across
  1. 1. large particles that settle out; ex. blood
  2. 5. energy that does work
  3. 6. when two or more different kinds of atoms bind
  4. 8. bonds that share electrons
  5. 9. electrically negative
  6. 11. used in Pet scans
  7. 17. shell another name for energy level
  8. 20. electrically neutral
  9. 21. number of of an atom that is sum of protons and neutrons
  10. 22. reaction that involves atoms combining to form large molecule
  11. 24. structural variations of elements like deuterium
  12. 26. number that is equal to the number of protons in the nucleus
Down
  1. 2. reactions that release heat
  2. 3. bonds that hold atoms together
  3. 4. particles or building blocks of elements
  4. 6. substances that increase the rate of chemical reactions without being changed
  5. 7. reaction that occurs when molecule is broken down into smaller molecules
  6. 10. particles of very tiny and do not settle out
  7. 12. have positive electrical charge
  8. 13. usually serve as catalysts
  9. 14. capacity to do work
  10. 15. energy that is stored
  11. 16. bonds that transfer electrons
  12. 18. are biological catalysts
  13. 19. occupies space and has mass
  14. 23. particles are larger and do not settle out; jello
  15. 25. reactions that absorb heat