Key Term Review Chemistry

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Across
  1. 2. found in Groups 1, 2 and the transition block (on the left hand side of the periodic table)
  2. 4. bonding found between a metal and a non metal
  3. 7. positive particle found in nucleus
  4. 10. neutral particle found in nucleus
  5. 11. found in groups 4-8 (right hand side of periodic table)
  6. 13. number of protons only (2 words no space)
  7. 16. bonding found between 2 or more non metals
  8. 18. neutrons + protons (2 words no space)
  9. 19. a row across the table
  10. 20. when an atom gains an electron to become an ion it becomes
  11. 21. when an atom loses an electron to become an ion it becomes
  12. 23. describes what happens to pairs of electrons in a covalent bond
Down
  1. 1. a positive ion
  2. 3. negative particle with no mass
  3. 5. a column down the table
  4. 6. number of electrons in second and third shell
  5. 8. centre of the atom
  6. 9. metal found in group 1 in the 3rd period
  7. 12. a negative ion
  8. 14. describes what happens to electrons in an ionic bond
  9. 15. Group 7 gas found in the 3rd period
  10. 17. number of electrons the first shell can hold
  11. 22. where electrons can be found