Across
- 4. Polymerized ethylene.
- 6. Important for the production of chemicals.
- 8. These are not always cube shaped.
- 11. Combine nanoparticles with other nanoparticles or with larger, bulk-type materials.
- 13. Do not store in metal.
- 14. The ability of the plastic to resist abrasion and wear.
- 15. Should be used when there is a risk of adverse exposure of chemicals to the skin.
- 16. A nanomaterials may be incidentally produced as a byproduct of mechanical or industrial processes.
- 17. These nanomaterials are nanosized polymers built from branched units.
- 18. The process of mixing these additives to virgin plastics.
- 19. Condensation products of dicarboxylic acid with dihydroxy alcohols.
- 22. A self-reactive substances.
- 23. This process is used to obtain three-dimensional articles from two-dimensional sheets.
- 24. A chemical that is not corrosive, but causes reversible inflammatory effects on living tissue at the site of contact.
- 25. The extent to which the polymer chains are arranged in a regular structure instead of a random fashion.
- 26. It is the study of manipulating matter on an atomic and molecular scale.
- 27. Substances that emit a flammable gas upon contact with water.
- 28. Chemicals that have flash points of 100200oF.
- 30. react vigorously with reducing materials.
- 32. Breathing in contaminated air is the most common way that workplace chemicals enter the body.
- 33. Modify the properties of plastics to give the final plastic, better hardness, tensile strength, finish and workability.
- 34. Chemicals vary widely in how toxic (poisonous) they are.
- 35. Belongs to the synthetic polymers family and is also known as polyamides.
- 38. Hard and rigid at room temperature and do not soften on heating.
Down
- 1. The amount of exposure to a chemical is the single most significant factor of concern.
- 2. These bonds are extremely strong and very hard to break.
- 3. Macromolecules of high molecular weight which are formed by linkage between large numbers of small molecules called monomers.
- 5. A nanomaterials that have been deliberately engineered and manufactured by humans to have certain required properties.
- 7. Workplace chemicals may be swallowed accidentally if foods or hands are contaminated.
- 9. High polymers, which have elastic properties and can be stretched up to about 300 percent.
- 10. Class of high polymers which can be molded into any desired form by heat and pressure.
- 11. A chemical that causes cancer.
- 12. The tendency of a polymer to pass extraneous materials.
- 18. Any solid material with its atoms, or smallest units of matter, organized in a repeating pattern.
- 20. Two or more monomers undergoing joint polymerization.
- 21. An important tool in conveying risk information to employees.
- 26. Chemical substances or materials that are manufactured and used at a very small scale.
- 29. Atoms or group of atoms forming a building block of the smallest acceptable size of the whole volume of a crystal .
- 31. Occurs when exposure to two or more chemicals at a time results in health effects that are greater than the sum of the effects of the individual chemicals.
- 36. An infinite periodic array of points in a space.
- 37. Electrostatic attraction between two polar groups.