Scientific amusements . Soap-boiling house. between alkaline and the alkaline earth metals. The saltsare found in many places in solution. The chloride whendecomposed by electricity yields the metal. CESIUM and Rubidium require no detailed noticefrom us. They were first found in the solar spectrum,and resemble potassium. Ammonium is only a conjectural metal. Ammonia, of 132 which we have already treated, is so like a metallic oxidethat chemists have come to the conclusion that its com-pounds contain a metallic body, which they have named hypothetically is usually classe
Scientific amusements . Soap-boiling house. between alkaline and the alkaline earth metals. The saltsare found in many places in solution. The chloride whendecomposed by electricity yields the metal. CESIUM and Rubidium require no detailed noticefrom us. They were first found in the solar spectrum,and resemble potassium. Ammonium is only a conjectural metal. Ammonia, of 132 which we have already treated, is so like a metallic oxidethat chemists have come to the conclusion that its com-pounds contain a metallic body, which they have named hypothetically is usually classed amongstthe alkaline metals. The saltsof ammonia are important,and have already been men-tioned. Muriate (chloride) ofammonia, or sal-ammoniac, isanalogous to chloride ofsodium and chloride of potas-sium. It is decomposed byMottled soap-frames. heating it with slakcd lime and then gaseous ammonia is given off. The Metals of the Alkaline Earths. Barium is the first of the four metals we have to noticein this group, and will not detainus long, for it is little known in afree condition. Its most im-portant compound is heavy spar{sulphate of baryta), which, whenpowdered, is employed as a whitepaint. The oxide of barium,BaO, is termed baryta. Nitrate of Baryta is used for green fire, which is made asfollows :—Sulphur, twenty parts ;chlorate of potassium, thirty-threeparts; and ni
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
