This application, designed for Second Year students, offers a complete review solution in Physics and Chemistry, bringing together all the essential lessons without requiring an Internet connection.It is a powerful tool for quickly and efficiently memorizing each lesson.Our app stands out for its ease of use, it eliminates the need to carry around a stack of papers and gives you the freedom to access revision sheets anywhere, without the need for a manual or other media .In short, it is an essential resource for Second Year students who are looking for an exhaustive and practical summary of all the Physics and Chemistry lessons at their level.Summary :Chap 1: Identification of chemical speciesChap 2: Composition of mixturesChap 3: Count the entitiesChap 4: The nucleus of the atomChapter 5: The electronic processionChap 6: Stability of chemical entitiesChap 7: Modeling physical transformationsChap 8: Modeling chemical transformationsChap 9: Synthesis of natural moleculesChap 10: Modeling nuclear transformationsChapter 11: Describe a movementChap 12: Modeling an action on a systemChap 13: Principle of inertiaChap 14: Emission and perception of a soundChap 15: Spectral analysis of light wavesChap 16: Propagation of light wavesChapter 17: Signals and sensorsThis is a Summarization for educational purposes, not a book so there is no copyright violation.