Unit 2: Atoms & the Periodic Table - Vocabulary Crossword Puzzle

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Across
  1. 6. A particle with a negative charge
  2. 9. Non-reactive elements in group 18A of the periodic table
  3. 12. Horizontal (⬌) rows on the periodic table
  4. 14. Atoms that gain or lose electrons; becoming charged-ion Charge An electric charge that forms on an atom when it gains or loses electrons
  5. 15. Atoms that lose electrons and have a positive charge
  6. 16. A particle with a neutral or no charge
  7. 17. The smallest parts of matter
  8. 18. Highly reactive metals in group 1A of the periodic table
  9. 20. Are not malleable nor ductile, poor conductors, and have a High-non reactivity
  10. 21. Highly reactive non-metals in group 17A of the periodic table
  11. 22. Electrons in the outermost shell
  12. 23. Are malleable & ductile, good conductors, and have a High-Low reactivity
Down
  1. 1. The center of an atom is called a _______
  2. 2. metals that form multiple ions and colorful compounds in groups 3-12
  3. 3. How a chemical substance interacts with itself or with other materials, releasing energy
  4. 4. Moderately reactive metals in group 2A of the periodic table
  5. 5. A particle with a positive charge
  6. 7. Measuring the size of atoms based on their distance from the nucleus
  7. 8. Varies in being malleable & ductile, are semi-conductors, and have a Medium-Low reactivity
  8. 10. Atoms that gain electrons and have a negative charge
  9. 11. Vertical (⬍) rows on the periodic table
  10. 13. A visual representation of an atom where electrons move along rings surrounding the nucleus
  11. 19. Atoms of the same element that have differing numbers of neutrons