human
In the second experiment, the union of sulphur with potash is effected by heat; for if a sulphuret was not formed, no solution of the sulphur would take place. Hence it is that chemical action is the consequence of a power, without which it could never ensue, and with which it always acts in unison. This power is affinity.
gpt
Chemistry is a science, which has for its object to discover the constituent properties of bodies, the result of the various combinations, and the laws by which those combinations are effected. Its operations being either analytical or synthetical, consist of composition, or decomposition. The laws which govern chemical changes have been resolved into those of attraction or affinity. Affinity of composition of chemical affinity differs from that of aggregation or cohesion or corpuscular attraction, by acting upon matter of a different kind; or by taking place between the ultimate constituent parts of bodies, producing by its action, substances possessing properties frequently very different, and sometimes contrary to those of the constituent parts.
human
Philosophy