This book presents seven works carried out by first semester students during the Chemistry course: they interrelate the topics analyzed with algebra, calculus, numerical methods and geometry. The structure of this book presents, in Chapter one: "RELATIONSHIP BETWEEN ELECTRONEGATIVITY AND COVALENT BINDINGS FROM AN ALGEBRAIC APPROACH", in chapter two "STOCHIOMETRY AND ITS RELATIONSHIP WITH CALCULUS: RELATIONSHIP BETWEEN THE LIMITING REACTANT AND THE DERIVATIVE OF A FUNCTION", chapter three "RELATIONSHIP OF THE ION BOND WITH ALGEBRA", chapter four "METALLIC BINDINGS AND MOLECULAR GRAPHS", chapter five "THE USE OF CHEMICAL SUBSTANCES RELATED TO ALGEBRAIC CALCULATIONS FOR THE OBTAINING OF ENERGY", chapter six "MATHEMATICAL MODEL FOR DETERMINING THE SEPARATION OF OXIDE FROM A METAL BY ELECTROLYSIS" and in chapter seven "RELATIONSHIP BETWEEN IONIC BONDING AND FIRST GRADE ECUATIONS". All these works show the intrinsic relationship of the subjects included as "Basic Sciences" in Engineering, in the case of the Universidad Autónoma de Yucatán, in the four Engineering Degrees taught at the Bachelor's level: Civil, Physics, Mechatronics and Renewable Energies.