Philosopher's stone 9 Phlogiston 19 Phosphates 245 Phosphine 242 Phosphonium compounds 243 Phosphoric acid 244 Phosphorite 239 Phosphorous acid 244 Phosphorus 239 acids 243 family 238 hydrogen compounds 242 occurrence 239 oxides 243 preparation 239 properties 240 red 241 yellow 240 Photography 367 Physical changes 2 properties 3 properties and periodic groups 171 state 3 Physics 1, 4 Pitchblende 314 Plaster of Paris 308 Platinic chloride 393 Platinized asbestos 391 Platinous chloride 393 Platinum 391 a catalytic agent 152, 392 Pneumatic trough 16 Polyboric acid 265 Polyhalite 288 Polysilicic acids 261 Porcelain 336 Portland cement 304 Potash 293 Potassium 287 acid carbonate 294 acid sulphate 294 acid sulphite 294 alum, aluminium 334 alum, chrome 384 alum, iron 352 and plant life 287 aurate 396 bromide 290 carbonate 293 chlorate 291 chloride 290 chromate 385 cyanide 293 dichromate 386 ferricyanide 352 ferrocyanide 352 hydroxide 288 hydroxide, action of halogens 289 hypochlorite 289 iodide 290 manganate 381 nitrate 291 occurrence 287 permanganate 381 preparation 288 sulphate 294 Precipitated chalk 306 Precipitation 140 Properties, chemical 3 physical 3 Prussic acid 210 Puddling 343 furnace 344 Pyridine 412 Pyrites 351 Pyrolusite 380 Pyrophosphoric acid 245 Quantitative equations 72 Quartz 260 Quicklime 302 Quinine 418 Quinoline 412 Radical 112 Radium 313 Reaction, classes 70 addition 70 completed 139 heat of 75 of decomposition 70 of double decomposition 71 of substitution 70 reversible 137 steps in 131 Realgar 246 Red lead 375 phosphorus 241 Reducing agent 37 Reduction 36, 354 Rennin 414 Resemblances, family 170 Respiration 87 Rhodium 390 Rochelle salts 408 Rouge 349 Rubidium 294 Ruby 331 Ruthenium 390 Rutile 264 Safety lamp 202 Sal ammoniac 294 soda 282 Salt 280 Saltpeter 291 Chili 285 Salts, 109 acid, 112 Salts basic 111 binary 114 characteristics 109 definition 109 insoluble 272 mixed 244 nomenclature 113 normal 112 preparation by precipitation 270 Sand 260 Sandstone 260 Saponification 410 Sapphire 331 Satinspar 308 Scale 320 Schoenite 288 Selenite 308 Selenium 161 Serpentine 320, 336 Shot 247, 375 Siderite 339 Silica 260 Silicates 261 Silicic acids 261 Silicides 259 Silicon 258 acids 261 dioxide 260 fluoride 258 hydride 258 Silver 364 amalgamation process 364 bromide 367 chloride 367 coin 359 German 359 in copper ores 358 iodide 367 metallurgy 364 nitrate 366 oxide 366 parting of 365 refining 365 sulphide 366 Slag 340 Smalt 355 Smithsonite 321 Smokeless powder 293 Soaps 410 Soda ash 284 Soda lime 202