Materials

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. Depending on free oxygen or air (7)
  2. 6. A mixture of decaying vegetation and manure (7)
  3. 9. Generic name for certain synthetic or semisynthetic materials that can be molded or extruded into (7)
  4. 10. Strong metal used to make tools and nails (4)
  5. 11. A polymer of styrene (11)
  6. 14. Red, blue and yellow are all examples of this (5)
  7. 15. A material made of cellulose pulp derived mainly from wood or rags or certain grasses (5)
  8. 16. Any of several chemical elements that are usually shiny solids that conduct heat or electricity (5)

Down

  1. 2. To use again after processing (5)
  2. 3. A low area that has been filled in (8)
  3. 4. To separate into constituent elements or parts (9)
  4. 5. A coarse term for defecation (4)
  5. 7. Study of the natural world through experiments (7)
  6. 8. A ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element (6)
  7. 12. To cause to repeat a cycle (7)
  8. 13. A brittle transparent solid with irregular atomic structure (5)