Suaad’s Crossword Puzzle

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Across
  1. 3. positively charged ion.
  2. 6. collection of elements found in group 18 of the periodic table
  3. 7. a particle with no charge
  4. 10. postivly charged particles
  5. 11. negatively charged ion.
  6. 12. elements found in group 17
  7. 16. atom found in group.
  8. 19. a bond that forms between an anion and cation.
  9. 20. molecule formed through covalent bonding
  10. 21. found on the left hand side of periodic table.
  11. 24. transfer of thermal energy
  12. 25. arrangement of electrons in an atom
  13. 27. found on the right hand side of periodic table.
  14. 28. Diagram that shows the arrangement of electrons and electron shells in an atom.
  15. 29. formed as a result of a chemical reaction
  16. 30. molecule that contains only carbon and hydrogen atoms
Down
  1. 1. found in group 2 of periodic table
  2. 2. outer most shell in an atom
  3. 4. A vertical list of elements a pure substance
  4. 5. A horizontal list of elements.
  5. 8. a comlecule that has 2 atoms
  6. 9. a bond formed when 2 or more atoms share electrons.
  7. 13. way to represent the electrons of an atom in a shell
  8. 14. negatively charged particle
  9. 15. the number of protons in an atom
  10. 17. smallest unit
  11. 18. an atom that has gained or lost electrons
  12. 22. table of arranged elements a pure substance with the same type of atom
  13. 23. a mixture of a solute dissolved in a liquid such as water.
  14. 26. a molecule that forms by anions and cations