CHEMISTRY FOR ENGINEERS CROSSWORD PUZZLE

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Across
  1. 1. is a thermoplastic “addition polymer” made from the combination of propylene monomers.
  2. 5. are defined as polymers that can be melted and recast almost indefinitely. They are molten when heated and harden upon cooling.
  3. 8. is a field of research and innovation concerned with building 'things'.
  4. 11. is a process of reacting monomer molecules together in a chemical reaction to form polymer chains.
  5. 12. a chemical that causes birth defects.
  6. 14. are polymers in which a crosslinking reaction occurs promoting chemical bonding between macro molecular chains.
  7. 18. is a wide range of synthetic or semi-synthetic materials that are used in a huge and growing range of applications.
  8. 19. is a process of heating a thermoplastic sheet to its softening point.
  9. 21. refers to the degree of structural order of a solid.
  10. 24. is a polymer made up of siloxane.
  11. 27. is a polymer derived from more than one species of monomer.
  12. 29. is a solid material whose constituents are arranged in a highly ordered microscopic structure.
  13. 30. a substance that causes slight inflammation or other discomfort to the body.
  14. 33. is a category of polymers that contain the ester functional group in every repeat unit of their main chain.
  15. 35. the ability of the plastic to resist abrasion and wear.
  16. 37. can be defined as materials possessing, at minimum, one external dimension measuring 1-100nm.
  17. 38. is any artificial elastomer, synthesized from petroleum byproducts.
  18. 39. are nanomaterials that nanosized polymers built from branched units.
  19. 40. are typically viscous substances that convert into rigid polymers through a curing process.
Down
  1. 2. is a lightweight, durable thermoplastic with variable crystalline structure.
  2. 3. is produced from plants and is classified as a polymer.
  3. 4. an infinite periodic array of points in a space.
  4. 6. is a substance that is added to a material to make it softer and more flexible.
  5. 7. is a thermoplastic silky material, generally made from petroleum, that can be melt-processed into fibers, films, or shapes.
  6. 9. one of the structural categories systems to which crystalline solids can be assigned.
  7. 10. a chemical that will cause an allergic reaction in a substantial number of exposed people.
  8. 13. a tough elastic polymeric substance made from the latex of a tropical plant or synthetically.
  9. 15. is the simplest repeating unit in a simple cubic structure​.
  10. 16. is a chain of chemically linked one type of small molecules (or monomers),
  11. 17. substance is one that will damage or destroy other substances with which it comes into contact by means of a chemical reaction.
  12. 20. are referred to three axes of unequal lengths.
  13. 22. are derived from petroleum oil, and made by scientists and engineers.
  14. 23. a substance added to a product (as to increase bulk, weight, viscosity, opacity, or strength)
  15. 25. are simply a combination of two or more constituent materials with different physical or chemical properties.
  16. 26. the crystal is described by vectors of unequal length.
  17. 28. Any of numerous natural and synthetic compounds of usually high molecular weight consisting of up to millions of repeated linked units, each a relatively light and simple molecule.
  18. 31. has three axes that all meet at 90 degrees.
  19. 32. is used to coat a variety of products because it's waterproof, cuts down on friction, and creates a nonstick surface.
  20. 34. a chemical that damages chromosomes.
  21. 36. is an agent with the capacity to cause cancer in humans.