INDEX 



ACCELERATION, 38-41 ; produced 

 by a force, 59, 60 ; uniform, 

 measurement of, 38, 39 ; unit of, 

 39, 40 ; units of time, velocity 

 and, 3443 



Acetylene, 294 



Acid, hydrochloric, composition 

 of, 263, 264; phosphoric, and 

 phosphates, 279, 280 ; salts and 

 basic salts, 305 308 ; sulphuric, 

 253 255 ; manufacture of, 255 ; 

 sulphurous, and sulphites, 252, 

 253 



Acids, bases and salts, 299310 ; 

 reactions of hydroxides with, 

 301, 302 



Action, chemical, energy of, 127, 

 128 ; quantitative, character of, 

 223 225 ; of sulphuric acid on 

 metals, 254, 255 



Actions, chemical, represented by 

 equations, 274276 



Adhesion, 14 



Air, chemical composition of, 218, 

 219 ; compared with oxygen, 

 226, 227 ; the active constituent 

 of, 219, 220 ; various substances 

 present in, 225, 226 ; weight of 

 the, 106, 107 



Alkalies, 305 



Allotropy, 251 



Ammonia, 305 307 ; composition 

 of, 306, 307 



Ammonium, 307, 308 



Amorphous silica, 313 



Analysis of light by a prism, 176 

 178 



Archimedes, principle of, and 



relative density, 91 105 ; 

 applications of, 95 



Area, measurement of, 24, 25 ; 

 relation between British and 

 metric units of, 27 ; units of 

 length, volume and, 21 33 



Areas, determination of, 27, 28 ; 

 exercises in measurement of, 

 2527 



Argon, 219 



Atmosphere, the, 217232 ; 

 application of Boyle's Law to 

 the, 115; column of, weight of, 

 110, 111 ; pressure of the, 107, 

 108 ; pressure of the, at 

 different altitudes, 112 



Atmospheric pressure and Boyle's 

 Law, 106117 



Atomic weights, 272 



Atoms and molecules, 270 



Attraction of gravity, 62 



Avogadro's law, 270 



BALANCE, the, 5052 

 Barometer, mercurial, principle of 



the, 108110 

 Barometers, mercury a convenient 



liquid for, 111, 112 

 Bases, acids, and salts, 299310 

 Basic salts, acid salts and, 305 308 

 Blacklead or graphite, 285 

 Boiling point, 151 153 ; effect of 

 pressure on the, 152, 153 ; 

 marking the, 140, 141 

 Boyle's Law, 114, 115 ; applica- 

 tion of, to the atmosphere, 115 : 

 atmospheric pressure and, 106 

 117 



