Standard 3 Crossword

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Across
  1. 3. a type of solid that does not have an orderly arrangement of its particles
  2. 5. element with 6 valence electrons and 6 electron energy levels
  3. 7. most of the mass of an atom is found in the ___________
  4. 9. a long chain of molecules combined into a larger molecule
  5. 11. the number of valence electrons will predict how ________ an element is
  6. 12. a chemical symbol on the periodic table is a(n) __________ for the element's name
  7. 13. unit of measurement used for the mass of subatomic particles
  8. 16. type of bond that holds water molecules together
  9. 18. atoms are always electrically ____________
  10. 19. information on the periodic table that tells you how many protons can be found in one atom of an element
  11. 21. particle found in a cloud outside the nucleus
  12. 22. element with only 6 protons in its nucleus
  13. 23. particle formed when two or more atoms chemically bond together
  14. 25. name of a combination of two or more substances physically combined
  15. 27. the most massive element with only one valence electron
  16. 30. element on the periodic table with the lowest mass
  17. 32. an ion always has a(n) __________ number of protons and neutrons
Down
  1. 1. the particles found in the nucleus of an atom are neutrons and __________
  2. 2. type of bond formed between metals and non-metals
  3. 4. characteristics of a substance
  4. 6. if a train were a polymer, each train car would be a __________
  5. 8. rubber is an example of a _________ polymer
  6. 9. a material that is made of a single type of particle
  7. 10. another word for a column on the periodic table
  8. 14. subatomic particle without an electrical charge
  9. 15. the first 92 elements are ________ occurring
  10. 17. outermost electrons on an atom
  11. 20. the number on the periodic table that shows how energy levels an atom will have
  12. 24. substance formed when two or more elements combine
  13. 26. has the symbol Ar
  14. 28. a substance with an orderly three-dimensional arrangement of particles
  15. 29. a pure substance that cannot be broken down by physical or chemical means
  16. 31. chemical symbol for germanium
  17. 33. the smallest amount of an element