The New ChemistryD. Appleton and Company, 1897 |
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Pagina 51
... salt as the solution evaporates . . . . Notice that , first , small particles appear , and then from these nuclei the crystals shoot out and ramify in all directions , soon covering the plate with a beautiful net - work of the fila ...
... salt as the solution evaporates . . . . Notice that , first , small particles appear , and then from these nuclei the crystals shoot out and ramify in all directions , soon covering the plate with a beautiful net - work of the fila ...
Pagina 57
... salt under these conditions . I will , there- fore , take another glass plate , and , having smeared it as before with the solution of urea , I will place it in the focus of my lens before the polarizer . The field is now perfectly dark ...
... salt under these conditions . I will , there- fore , take another glass plate , and , having smeared it as before with the solution of urea , I will place it in the focus of my lens before the polarizer . The field is now perfectly dark ...
Pagina 99
... salt must have all the saline properties which we associate with this substance . Dissolve the salt in water , and you simply divide the mass into molecules . Convert the salt into vapor , as you readily can , and again you isolate the ...
... salt must have all the saline properties which we associate with this substance . Dissolve the salt in water , and you simply divide the mass into molecules . Convert the salt into vapor , as you readily can , and again you isolate the ...
Pagina 100
... salt in precisely the same way that a lump of sugar differs from a lump of salt . In a word , what is true of the substance in mass is true of its molecules . Hence it is that , in studying the chemi- cal relations of substances , we ...
... salt in precisely the same way that a lump of sugar differs from a lump of salt . In a word , what is true of the substance in mass is true of its molecules . Hence it is that , in studying the chemi- cal relations of substances , we ...
Pagina 134
... we can break up the molecules , and the parts of the mole- cule thus brought to our knowledge are the atoms . Take , for example , common salt : THE RELATIVE WEIGHTS OF ATOMS . 135 The smallest particle 134 COMBINING PROPORTIONS .
... we can break up the molecules , and the parts of the mole- cule thus brought to our knowledge are the atoms . Take , for example , common salt : THE RELATIVE WEIGHTS OF ATOMS . 135 The smallest particle 134 COMBINING PROPORTIONS .
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Termeni și expresii frecvente
acetic ether aëriform alcohol alizarine alkali atom of oxygen atomic weights atoms of hydrogen burning butyric acid called carbonic dioxide charcoal chemical change chemical processes chemist chemistry chlorine color combustion compounds condition consists contain copper criths cubic cubic centimetres cules definite proportions density effect elementary substances elements equal ether evidence example experiment facts flame gases glass grammes heat of formation Hence hydrate hydrochloric acid hydrogen hydrogen gas hydrogen-atoms Illustrations iron lecture light liquid litre magnet mass material metallic microcriths mole molecular structure molecular weight molecule of water molecules nitric nitric acid nitro-glycerine nitrogen nitrous oxide notice obtained oxygen oxygen gas particles phenomena polarized poles potassic pounds pressure principle quantity quantivalence radical reaction relations result salt simple sodic sodium solid solution specific gravity stances sugar sulphur symbols temperature tension theory tion vapor volatile volume wholly
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