“The Covalent Bond” is an interactive reference, and educational tool about chemical bond. User will learn molecule structure of hydrogen, oxygen, nitrogen and methane. This app allows you to study about covalent bond of molecules in an easy and interactive way. Through a simple and intuitive interface it is possible to observe covalent bond of molecules. "The Covalent Bond" is an application aimed at school students, teachers and in general anyone interested in deepening their knowledge about covalent bond. This robust application is a great teaching and learning tool for students, educators and teachers wanting to study or teach about the covalent bond of molecules. FEATURES: - 3D models that you control, each structure clearly labeled with useful all models. - Audio guide available for covalent bond. - Rotational models (views from different angles). - Great learning about chemical bond. - Tap and Pinch Zoom - zoom into and identify all the molecules of covalent bond.