The Periodic Table

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Across
  1. 3. Elements found along the stair-step line that distinguishes metals from non-metals
  2. 4. Very reactive metals that do not occur freely in nature
  3. 8. Chemical property describing an atom's ability to attract and bind with electrons
  4. 11. A charged atom or molecule
Down
  1. 1. A vertical group of the periodic table
  2. 2. Atomic radius from left to right
  3. 3. The amount of energy required to break a bond(s) to change the solid phase of a substance to a liquid
  4. 5. Most of the elements on the periodic table are grouped as
  5. 6. A horizontal line of the periodic table
  6. 7. Metals generally posses a melting point
  7. 9. The total distance from an atom’s nucleus to the outermost orbital of electron
  8. 10. Elements to the right of the stair-step line