Chapter 20: Chemical Texture Services

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Across
  1. 3. middle layer of the hair
  2. 5. once in the cortex the waving solution breaks the disulfide bones though a chemical reaction called ___________
  3. 7. long, coiled peptide chains
  4. 12. AKA end bonds, chemical bonds that join amino acids together
  5. 13. ___________________ waving solutions soften and swell the hair and then open the cuticle; permitting the solution to penetrate into the cortex.
  6. 14. requires a highly alkaline chemical solution
  7. 17. measures the acidity and alkalinity of a substance
  8. 18. salt, and hydrogen bonds that cross-link polypeptide chains together
  9. 20. loosening overly curly hair
  10. 21. long chains of amino acids joined together by peptide bonds
  11. 22. highest on pH scale
  12. 24. the cortex is made of up millions of polypeptide chains ______________ by three types of side bonds: disulfide, salt, and hydrogen
  13. 26. lowest on pH scale
Down
  1. 1. are weak physical side bonds that are also the result of an attraction between opposite electrical charges.
  2. 2. innermost layer of the hair often called pith or core
  3. 4. are strong chemical side bonds formed when the sulfur atoms in two adjacent protein chains are joined together.
  4. 6. two-step process whereby the hair undergoes a physical change caused by wrapping the hair on perm rods; then undergoes a chemical change caused by the application of permanent waving solution or neutralizer.
  5. 8. hair services that cause a chemical change within the hairs natural wave and curl pattern
  6. 9. the reduction reaction
  7. 10. the size of the rod __________ the size of the curl.
  8. 11. the _________________ of the curl are determined by the shape and type of rod and the wrapping method used.
  9. 15. removing curl or waves
  10. 16. relatively weak physical side bonds that are the result of an attraction between negative and positive electrical charges (ionic bonds)
  11. 19. they are easily broken by water or heat and the re-form as the hair ________________.
  12. 23. compounds made up of carbon, oxygen, hydrogen, nitrogen, and sulfer
  13. 24. tough exterior layer of the hair
  14. 25. keratin proteins are made of long chains of amino acids linked together ______________ like beads.