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The text of General Chemistry aims to study chemistry and its different topics to develop in students skills that allow them to build their own knowledge and develop authentic performances to understand the world around them, get involved and act on it, being clear about the characteristics, phenomena, physical and chemical properties of substances and compounds. Chemistry is present all around us, I invite you to think of a material, process, phenomenon, in which a topic related to chemistry is not addressed. Thinking quickly, if we deal with the subject of bones, it is implicit that the element Calcium (Ca) comes up immediately, when considering plastics as a great ally of the current industry and one of the great enemies of the planet, it is impossible not to address the issue of polymers (C and H), the voltaic and electrolytic cells are closely related to chemical elements such as oxidizing agents and oxidizing agents.chemical elements as oxidizing and reducing agents, in short, to talk about chemistry is to talk about nature and its relationship with man.