. Elements of modern chemistry . combination as it is called, is INTRODUCTION. 9 a new body, rust or hydrated oxide of iron. In this case thealteration is profound, the change is lasting; the specific natureof the body is afiected. This is characteristic of chemicalaction. In the same manner, when the charcoal and the sulphur areburned in the air, they attract oxygen and combine with it,forming two new bodies that are called carbonic and sul-phurous acids. These phenomena may be rendered more clear by simple andwell-known experiments. Experiment 1.—A globe (Fig. 1) is filled with oxygen, agas
. Elements of modern chemistry . combination as it is called, is INTRODUCTION. 9 a new body, rust or hydrated oxide of iron. In this case thealteration is profound, the change is lasting; the specific natureof the body is afiected. This is characteristic of chemicalaction. In the same manner, when the charcoal and the sulphur areburned in the air, they attract oxygen and combine with it,forming two new bodies that are called carbonic and sul-phurous acids. These phenomena may be rendered more clear by simple andwell-known experiments. Experiment 1.—A globe (Fig. 1) is filled with oxygen, agas which constitutes one of the elements of the atmosphere,and which is eminently fitted to support combustion ; into it isplunged a morsel of charcoal lighted at one end ; immediatelythe coal glows with a brilliant light, the combination takes placeactively, and the charcoal is rapidly consumed. But presentlythe light becomes paler, the combustion ceases, and the char-coal is extinguished. The oxygen is now nearly or quite con-.
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