All On the spot articles
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         Puzzle PuzzleNovember 2019 puzzlesDownload the puzzles from the November 2019 print issue of Chemistry World 
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         Puzzle PuzzleOn the spot: Pocketful of troubleWhat would you do if you found a mystery substance in your lab coat pocket? 
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         Puzzle PuzzleOctober 2019 puzzlesDownload the puzzles from the October 2019 print issue of Chemistry World 
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         Puzzle PuzzleSeptember 2019 puzzlesDownload the puzzles from the September 2019 print issue of Chemistry World 
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         Puzzle PuzzleOn the spot: Keyboard contaminationWhat would you do if your hands are red and itchy after returning from the lab? 
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