Atomic Structure and Trends in the Periodic Table

12345678910
Across
  1. 3. A horizontal row in the periodic table.
  2. 5. The smallest unit of matter.
  3. 8. The center of an atom.
  4. 9. A particle that orbits the nucleus.
  5. 10. A particle in the nucleus with a positive charge.
Down
  1. 1. An element that usually loses electrons.
  2. 2. An element that usually gains or shares electrons.
  3. 4. A vertical column in the periodic table.
  4. 6. A particle in the nucleus with no charge.
  5. 7. How many electrons an atom can gain, lose, or share.