Chemistry of Life Vocabulary

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Across
  1. 1. positive charge; located in nucleus
  2. 2. pH above 7 and less than or equal to 14
  3. 5. a fatty substance that does not disolve in water
  4. 8. negative charge; located in orbits (clouds) outside of nucleus 1st level- 2 2nd level- 8 3rd level-18
  5. 9. mixture of substances that is the same throughout (ie. kool-aid)
  6. 11. in a solution, the substance in which the solute dissolves
  7. 13. compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body
  8. 16. a substance on which an enzyme acts during a chemical reaction
  9. 18. substance that speeds up the rate of a chemical reaction
  10. 19. a simple compound whose molecules can join together to form polymers
  11. 21. atom that has lost or gained an electron (charged particle) (ie. table salt)
  12. 23. bond formed between oppositely charged ions
  13. 25. basic building blocks of protein molecules
  14. 27. two or more atoms held together by covalent bonds
  15. 28. smallest basic unit of matter (in living and nonliving things)
  16. 30. protein that speeds up a chemical reaction
  17. 31. unequal pull of electrons resulting in a positive and negative side (ie. water)
  18. 32. Large organic molecule made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
  19. 33. bond bond between molecules of water; very weak bond
  20. 34. pH lower than 7 and greater than or equal to 0
Down
  1. 1. a chemical substance formed as a result of a chemical reaction
  2. 3. substance made of only one type of atom that cannot be broken
  3. 4. an attraction between molecules of different substances
  4. 6. measure of how acidic or basic a solution is; the scale ranges from below 0 to above 14; solution with pH above 7 is basic and a pH below 7 is acidic
  5. 7. water molecules "stick" to other water molecules (ie. surface tension)
  6. 10. the minimum amount of energy required to start a chemical reaction
  7. 12. no charge; located in nucleus
  8. 14. a chemical substance that is present at the start of a chemical reaction
  9. 15. When the concentration of a solute is the same throughout a solution
  10. 17. found in small amounts of the body but are very important (ie: iron)
  11. 20. a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers
  12. 22. atoms share electrons; very strong bond
  13. 24. the dissolved substance in a solution
  14. 26. substance made of atoms of different elements bonded together
  15. 29. very large organic molecule made of carbon, oxygen, hydrogen, nitrogen, and phosphorus, that contains the instructions cells need to carry out all the functions of life