Scientific amusements . n;then cdrefully let the bubble fall into the glass vesselperpendicularly. If this fall be from a certain heightthe bubble will rebound as if it had been repelled by aspring ; then it re-descends and again ascends many times,and executes many vertical oscillations before it becomesmotionless. At that moment the covering should bereplaced, so that no agitation is produced within thevessel. The soap bubble floats upon the stratum ofcarbonic acid gas, which is invisible. CHEMISTRY WITHOUT A LABORATORY. 97 FORMATION OF SALTS—INSTANTANEOUSCRYSTALLIZATION. We are aware that c
Scientific amusements . n;then cdrefully let the bubble fall into the glass vesselperpendicularly. If this fall be from a certain heightthe bubble will rebound as if it had been repelled by aspring ; then it re-descends and again ascends many times,and executes many vertical oscillations before it becomesmotionless. At that moment the covering should bereplaced, so that no agitation is produced within thevessel. The soap bubble floats upon the stratum ofcarbonic acid gas, which is invisible. CHEMISTRY WITHOUT A LABORATORY. 97 FORMATION OF SALTS—INSTANTANEOUSCRYSTALLIZATION. We are aware that caustic soda or oxide of sodiumis an alkaline, production endowed with very energeticproperties; it blisters the skin and destroys organicmatter. Sulphuric acid is endowed with not less destructiveproperties : a drop falling on the hand will produceintense pain, and cause a terrible burn ; a piece of woodplunged into this acijd is carbonised iriimediately. If we mix forty-nine grammes of sqlphuric acid and p? 1 / /^Sv^.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
