Excerpt from Outline of Lecture Notes on General ChemistryThe compounds in which the metals occur most commonly, are for the heavy metals, oxides and sulphides for the light metals, silicates, carbonates, sulphates, and other salts.An ore is a natural metallic compound from which the metal may be profitably extracted.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.