Earth Materials

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. A mixture containing two or more metallic elements or metallic and nonmetallic elements usually (5)
  2. 4. Carbon fuel produced by distillation of coal (4)
  3. 6. A substance consisting of two or more substances mixed together (plural) (8)
  4. 7. A brittle transparent solid with irregular atomic structure (5)
  5. 11. A stable particle with positive charge equal to the negative charge of an electron (6)
  6. 14. A chemical decomposition reaction produced by passing an ___ current through a solution (12)
  7. 15. A substance formed by chemical union of two or more elements or ingredients in definite proportion (8)
  8. 16. A particle that is electrically charged (3)

Down

  1. 2. A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals (9)
  2. 3. The process of oxidizing (9)
  3. 5. An elementary particle with negative charge (8)
  4. 8. An arbitrary sign that has acquired a conventional significance (6)
  5. 9. An alloy of iron with small amounts of carbon (5)
  6. 10. Occurring or formed with the liberation of heat (10)
  7. 12. The smallest component of an element having the chemical properties of the element (4)
  8. 13. Any process in which electrons are added to an atom or ion (9)