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Chemical Formulas and Numbers

· By Astoria Bob · Published 2023-02-02T05:03:48.951Z

This is an example of a mixed cross word and number puzzle, focusing on chemistry and numbers. These mixed types of puzzle are useful for learning, and still able to be constructed grid first, clues next.
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    1A
    Periclase
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    Across
    1. 1A
      Periclase
    2. 4A
      Greenhouse gas
    3. 7A
      Table or kosher varieties
    4. 9A
      CH4 + ___ → CO2 + 2H2O
    5. 11A
      Clodronate disodium
    6. 13A
      ___ + 17H2 → C8H18 + 8H2O
    7. 14A
      Potassium acetate E number
    8. 16A
      Female rock band
    9. 17A
      Fictitious platinum compound
    10. 19A
      Eureka!
    11. 20A
      5^5
    12. 22A
      Denominator for units of molecular weight
    13. 24A
      A dayful of electrons
    14. 26A
      Carbon tetrafluoride spelled backwards
    15. 27A
      Houston area code followed by element #8
    16. 28A
      CAS #24304-00-5
    17. 29A
      Manitoba area code
    Down
    1. 1D
      Potassium permanganate precipitate
    2. 2D
      Laughing ___
    3. 3D
      Full shell
    4. 5D
      Molecular weight of (NH4)2S2O8
    5. 6D
      Pyrophosphate ion (without charges)
    6. 8D
      Lanthanum sesquioxide
    7. 10D
      Phosgene without C
    8. 12D
      Six-membered ring
    9. 15D
      Albany zip code
    10. 17D
      Oxide of plutonium
    11. 18D
      Pentane
    12. 19D
      Pink halide of element 95
    13. 21D
      Ferrate ion
    14. 23D
      Life cycle assessment
    15. 25D
      Molecular weight of 1,1,3,3-tetrafluoroacetone
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