Ernst Rutherford

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 2. The smallest component of an element having the chemical properties of the element (plural) (5)
  2. 3. The act of conducting a controlled test or investigation (10)
  3. 4. A unit strength of a radioactive source equal to one million disintegrations per second (10)
  4. 5. Having a deficiency of electrons (14)
  5. 8. A body having finite mass and internal structure but negligible dimensions (plural) (9)
  6. 10. A piece of thin and flexible sheet metal (4)
  7. 11. A hypothetical description of a complex entity or process (plural) (6)
  8. 12. Center of an atom or a cell (7)

Down

  1. 1. A stable particle with positive charge equal to the negative charge of an electron (plural) (7)
  2. 3. Energy associated with electric charges, used to power lights and devices. (11)
  3. 6. An elementary particle with negative charge (plural) (9)
  4. 7. Shiny yellow metal used in jewelry (4)
  5. 9. Any of several chemical elements that are usually shiny solids that conduct heat or electricity (5)