Chemistry unit 1

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Across
  1. 3. the mass of a substance containing the same number of elementary particles as there are in 12.000 grams of carbon-23
  2. 6. the number of elementary particles that there are in 12.000 grams of carbon-12
  3. 7. the amount of substance containing the same number of elementary particles as there are in 12.000 grams of carbon 12
  4. 11. the same molecular formula, but a different functional group
  5. 12. the number of atoms of each element n one molecule of the substance
  6. 13. the heat energy required to remove one electron from each of a mole of free gaseous atom of that element
  7. 14. the simplest whole number ratio in which the atom of each element in a compound are found
  8. 15. the ability of an atom to attract electrons towards itself in a covalent bond
  9. 16. the number of protons in the nucleus of an atom
  10. 18. atoms with the same atomic number but different mass numbers
  11. 19. the same molecular formula but a different arrangement of of covalent bond
  12. 20. an attraction between a cat-ion and a sea of delocalised electrons
  13. 22. the same molecular formula but a different arrangement of carbon in the chain
  14. 25. the heat energy required to remove one electron from each of a mole of free gaseous +1 ions of that element
  15. 26. an atom or group of atoms which confer specific physical and chemical properties to the molecule
  16. 27. a pair of electrons shared between two atoms
Down
  1. 1. an attraction between oppositely charged ions
  2. 2. the existence of partial positive and negative charges on each end of the bond as a result of the unequal sharing of electrons
  3. 4. an element with s-electrons only in its outer shell
  4. 5. a pair of electrons shared between two atoms, one of which provides both of the electrons
  5. 8. an element with s and d-electrons but no p-electrons in its outer shell
  6. 9. the ratio of the average mass of a molecule to 1/2 of the mass of carbon-12
  7. 10. the ratio of the mass of one atom of the isotopic to 1/2 of the mass of one atom of carbon-12
  8. 17. a number of different structures having the same molecular formula
  9. 21. series of compounds with the same functional group in which the molecular formula varies by CH2 from one member to the next
  10. 23. the total number of protons and neutrons in the nucleus of an atom
  11. 24. an element with p-electrons in its outer shell