from Santillana (often under the project name Saber Hacer or Construyendo Mundos ) is a widely used textbook in Spanish secondary education. It covers the fundamental principles of physics and chemistry for 13-14-year-old students.
Properties, states (solids, liquids, gases), and the kinetic theory. fisica quimica santillana 2 eso link
The Santillana curriculum for this level is divided into several core blocks. Understanding these is essential for exam preparation. 1. The Scientific Method from Santillana (often under the project name Saber