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Chemistry
lots of chemistry words
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nucleus electron acid base chemical molecule atom electron proton positive negative neutron neutralisation hydrogen oxygen solid liquid gas lithium periodic table group sodium chlorine compound mixture state nitrogen silicon iron aluminium ninety two ion phosphorus light colour precipitation substance potassium silver gold copper zinc solution sulphate hydroxide carbon evaporation metal metalloid helium neon calcium sulphur oxide |
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Some of the puzzles that people list for the public get indexed by the search engines (like Google). Some people find those puzzles and cannot figure out how to make a puzzle of their own. So this page now has the navigation sidebar.
There are now buttons on the puzzle so that you can get a clean page, in either HTML or PDF, that you can use your browser's print button to print. The PDF format allows the web site to know how large a printer page is, and the fonts are scaled to fill the page. The PDF takes awhile to generate. Don't panic!