Study Guide, Part A (Crossword puzzle)

Edit Answers
123456789101112131415161718192021222324
Across
  1. 2. elements 57-71 on the periodic table which are rare earth metals
  2. 6. the elements that have properties of both metals and nonmetals
  3. 11. the area around the center of an atom where negatively charged particles circulate
  4. 12. elements 89-103 on the periodic table which are all radioactive
  5. 13. an atom of the same element that has a different number of neutrons
  6. 15. an atom that gains or loses one or more electrons
  7. 16. a vertical column on the periodic table
  8. 17. group 18 on the periodic table which is very stable, colorless and odorless, and also called inert gases because they almost never react with other
  9. 19. positively charged particles
  10. 22. the center of an atom
  11. 23. the process by which atoms produce energy and particles
  12. 24. the number of protons in the nucleus of an atom
Down
  1. 1. the process by which unstable atoms become more stable by emitting particles and radiation
  2. 3. the elements to the right side of the periodic table which have properties that are the opposite of metals
  3. 4. group 17 on the periodic table which is very reactive with groups 1 and 2
  4. 5. group 2 on the periodic table which is reactive with group 17, but less reactive than group 1
  5. 7. uncharged or neutrally charged particles
  6. 8. group 1 on the periodic table which is very reactive with group 17
  7. 9. groups 3-12 on the periodic table which are good conductors
  8. 10. an atom that gains one or more electrons
  9. 11. negatively charged particles
  10. 14. an atom that loses one or more electrons
  11. 18. the total number of protons and neutrons in an atom's nucleus (use the abbreviation)
  12. 20. a horizontal row on the periodic table
  13. 21. most of the elements on the periodic table which have properties that are the opposite of nonmetals