Chemical Bonding + Structure & Properties of Materials

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Across
  1. 1. easily separated by a physical process
  2. 3. maximum number of electrons in the 2nd shell
  3. 9. charge carried by a metal ion
  4. 11. a small group of non-metallic atoms bonded together, e.g. NH3 and CH4
  5. 12. bond formed when 2 non-metals react
  6. 14. smallest and unique part of a chemical element
  7. 18. number of protons in the nucleus of an atom equals the element’s ______ number
  8. 19. a negative non-metal ion
  9. 20. a mixture that is the same throughout
  10. 21. atoms react to obtain a ________ valence shell
  11. 22. a compound produced by respiration
  12. 27. a metal will ________ electrons to a non-metal
Down
  1. 2. a pure substance that cannot be converted into anything more simple by a chemical process
  2. 4. the first element in the Periodic Table
  3. 5. an inert non-metal on the Periodic Table
  4. 6. a measure of how much a chemical dissolves
  5. 7. a compound of hydrogen and oxygen
  6. 8. a mixture that is different throughout
  7. 10. a mixture of 2 or more metals
  8. 12. two or more elements chemically combined together
  9. 13. a covalent bond is a ______ pair of electrons
  10. 15. a positive metal ion
  11. 16. bond formed when metal reacts with non-metal
  12. 17. maximum number of electrons in the 1st shell
  13. 23. a mixture of nitrogen, oxygen and argon
  14. 24. charge carried by a non-metal ion
  15. 25. another name for the outer electron shell
  16. 26. reacts with a non-metal to form an ionic compound