8th Grade Chemistry Crossword

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Across
  1. 2. mixture that is not uniform in composition
  2. 5. when two different atoms combine
  3. 8. elements along zig-zag line on right side of periodic table
  4. 10. shininess
  5. 16. organized representation of all 118 elements
  6. 17. very reactive metals in group 17
  7. 18. elements on left side of periodic table (except hydrogen)
  8. 19. basic building blocks of matter
  9. 25. mixture that is uniformly distributed
  10. 26. gases in group 18
Down
  1. 1. number of protons in an atom
  2. 3. ability to conduct heat and electricity
  3. 4. when atoms (same or different) combine
  4. 6. seven horizontal rows on periodic table
  5. 7. metals in group 2
  6. 8. physical blend of two or more substances that are not chemically combined
  7. 9. carry a positive charge
  8. 11. have a negative charge
  9. 12. have no charge
  10. 13. ability to be drawn into thin wires
  11. 14. eighteen vertical columns on periodic table
  12. 15. metals in group 1
  13. 20. substance the opposite of a mixture (elements, molecules, compounds)
  14. 21. names of different atoms
  15. 22. mass weight of protons and neutrons in nucleus
  16. 23. all things are made of this
  17. 24. elements on right side of periodic table