564 



INDEX 



Oxidation, 40, 226-8 

 Oxides, acidic and basic, 257 

 Oxone, 31 

 Oxygen, 27-42 



member of sulphur family, 273 



molecular formula, 105 

 Ozone, 219-21 



PAINTS, 305-4 

 Paper manufacture, 398 

 Paraffin series, 343-7 

 Parke's process, 519 

 Pasteur filter, 66 

 Pauling process, 313 

 Perfumes, 478-9 

 Periodic system, 273-80 



applications of, 281-2 



defects of, 282-1 

 Permutite process, 390 

 Petroleum, 344 

 Phenols, 353 

 Phosphine, 323 

 Phosphorus, 319-23 



compounds as fertilizers, 411 



pentachloride, 236 



pentoxide, 322 

 Photography, 521-3 

 Physical properties, 33 

 Physics in chemistry, 22 

 Plant life, 395-7, 405-9 

 Plaster of Paris, 387 

 Plastics, 480 

 Platinum, 524-5 



group of metals, 281, 525-6 

 Polar and non-polar compounds, 554 

 Portland cement, 471 

 Potassium, 370 



bicarbonate, 371 



carbonate, 371 



chlorate, 30 



chloride, 413 



chromate, 531 



dichromate, 531 



ferricyanidej 498 



Potassium ferrocyanide, 497 



hydroxide, 371 



nitrate, 30, 372 



permanganate, 141, 529 



salts as fertilizers, 412 

 Precipitation, 129 



theory of, 458-9 

 Preferential combustion, 339 

 Pressure, atmospheric, 44 



osmotic, 407-9 

 Producer gas, 337 

 Promoters, 339 

 Proteins, 434 

 Protons, 195 

 Pyrex, 363 



QUARTZ, 4 



RADICALS, 170 



positive and negative, 171 



valence of, 212 

 Radioactivity, 542-8 

 Radium, 542-3 



Recognition of substances, metallic; 

 536 



non-metallic, 374 

 Reduction, 57, 228 

 Refrigeration, 306 

 Respiration, 291-2 

 Reverberatory furnace, 489 

 Reversible reactions, 69, 127, 230 

 Rouge, 496 

 Rusting, 9, 26, 494 



SALTS, 170, 192 



Saponification, 438 



Saturated solutions, 120, 243, 455 



Saturation, 110, 120 



Schonherr process, 313 



Scientific method, 24 



Selenium, 273 



Shale, 345 



Silica gel, 360 



Silicon, 359 



