Mr.Peats' Mysteries

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. Gas in the air that we need to breathe (6)
  2. 5. Moving air (4)
  3. 6. A heavy odorless colorless gas formed during respiration and by the decomposition of organic (13)
  4. 8. A common nonmetallic element belonging to the halogens (8)
  5. 9. The act of subjecting to experimental test in order to determine how well something works (7)
  6. 10. An outer garment that has sleeves and covers the body from shoulder down (4)
  7. 11. Shiny yellow metal used in jewelry (4)
  8. 12. A soft white precious univalent metallic element having the highest electrical and thermal (6)
  9. 13. Substance used in or made by chemistry (plural) (9)
  10. 15. Conduit consisting of a long hollow object used to hold and conduct objects or liquids or gases (plural) (5)

Down

  1. 2. The act of conducting a controlled test or investigation (plural) (11)
  2. 3. A relation of constraint of one entity by another (7)
  3. 4. A colorless odorless gaseous element that give a red glow in a vacuum tube (4)
  4. 7. Energy associated with electric charges, used to power lights and devices. (11)
  5. 11. A brittle transparent solid with irregular atomic structure (plural) (7)
  6. 14. The planet we live on (5)