. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . kinds of matter areknown as substances. Matter exists inthree states—solid, liquid and is good reason for believing that allsubstances can be converted by heating orcooling and pressure from any one of thesestates to the other. 4. Changes of St.\te. Changes of stateeffected by means of the forces mentionedwill not effect any permanent change onthe elements. Water may be convertedinto ice by cold or into steam by heat;but when the influence that effected thechange is withdrawn th
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . kinds of matter areknown as substances. Matter exists inthree states—solid, liquid and is good reason for believing that allsubstances can be converted by heating orcooling and pressure from any one of thesestates to the other. 4. Changes of St.\te. Changes of stateeffected by means of the forces mentionedwill not effect any permanent change onthe elements. Water may be convertedinto ice by cold or into steam by heat;but when the influence that effected thechange is withdrawn the ice or steam re-turns to water and it is the same substanceit was before the change took place. Butmatter frequently undergoes changeswhich are of a permanent character. Ifyou dissolve a few grains of common saltin a glass test tube containing pure wateryou can evaporate the water by heat andthe salt unaltered will remain as a sedi-ment. But after the salt is dissolved,a few drops of solution of nitrate of silverput into the tube will indicate that some-thing different has happened. The water. PURDUE UNIVERSITY, LaFAYETTE, IND. Courses in Mechanical Engineering,Electrical Engineering, Civil Engineering. Special attention is priven to work in entjineerinf;and management and to locomotixL- tustint;.In all departments there areExtensive and Well Bquipped Laboratories. CATALOG SENT ON APPLICATION.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
