The Principles of Chemistry, Volume II

"The Principles of Chemistry, Volume II" by Dmitry Ivanovich Mendeleyev is a late 19th-century science book. Mendeleyev shares the basics of chemistry, with a strong focus on the periodic law and how the elements relate to each other through their atomic weights. His purpose is to create a logical understanding of chemical properties and element behaviors, which is important for making improvements in chemistry. In the first part, he talks in detail about how the elements' composition and properties regularly depend on their atomic weights and brings up ideas like isomorphism and connections between the crystal shapes of elements and their compounds. Mendeleyev shows that using numbers and measurements is important for understanding how elements are grouped, explaining how observing and testing things helps us to better understand chemical connections. This beginning sets the scene for a full look at the periodic table, highlighting Mendeleyev's world-changing contributions to chemistry.