Atomic Structure

1234567891011121314151617181920
Across
  1. 2. A positively charged particle found in the nucleus
  2. 5. The number of protons in an atom
  3. 6. The outermost electrons involved in bonding
  4. 7. Elements that are usually shiny, conductive, and malleable
  5. 10. A negatively charged particle that orbits the nucleus
  6. 12. Elements that are poor conductors and often dull
  7. 13. The smallest unit of an element that retains its properties
  8. 15. A substance made from two or more different elements chemically combined
  9. 17. An energy level where electrons are found
  10. 18. A particle with no charge found in the nucleus
  11. 19. An atom that has gained or lost electrons and has a charge
  12. 20. Atoms of the same element with different numbers of neutrons
Down
  1. 1. A chart that organises elements by atomic number
  2. 3. Two or more atoms bonded together
  3. 4. A vertical column on the periodic table
  4. 8. A substance made of only one type of atom
  5. 9. Elements with properties of both metals and nonmetals
  6. 11. The central part of an atom containing protons and neutrons
  7. 14. The total number of protons and neutrons in an atom
  8. 16. A horizontal row on the periodic table