| 16 | Chemical properties of some chemical groups. Chemical bond. Lewis symbols, octet rule. Ionic bond, covalent bond, resonance hybrids | Exposition | - |
| 17 | Seminar 4. Lessons 15 and 16 | Exercises | |
| 18 | Dipole moments. Prediction of molecular geometries. Hybridisation. Molecular orbitals | Application: “Molecular shape” from Phetc | Students assign the molecular geometry to a set of molecules |
| 19 | Intermolecular forces. Dipole-dipole attraction, ion-dipole attraction, van del Waal forces, London forces, hydrogen bond | Searching on the internet the principal intermolecular forces | Short multiple-choice questions in socrative.com |
| 20 | Seminar 5. Lessons 18 and 19 | Exercises | |
| 21 | Gases. Properties of the gases. Boyle’s and Charles’s Law, Avogadro’s law. Ideal-Gas equation | Students interact with a balloon | Students answer a multiple-choice questionnaire through the socrative.com |
| 22 | Dalton’s law. Kinetic theory, Graham’s law of effusion, van der Waals equation | Exposition | - |
| 23 | Test 4. Lessons 12 to15 and 17 to 20 |
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| 24 | Properties of liquids. Structure and properties of water. Solids, crystal structures | Exposition | One-minute paper |
| 25 | X-ray diffraction. Heating curves, phase diagrams | Exposition | - |
| 26 | Seminar 6. Lessons 21, 22, 24 and 25 | Exercises | |
| 27 | Stoichiometry. The mol. Determination of the empirical and molecular formula | Using coins to represent atoms and molecules | Short multiple-choice questions in socrative.com |
| 28 | Reactions and chemical equations. Types of chemical reactions | Exposition | - |
| 29 | Seminar 7. Lessons 27 y 28 | Exercises | |
| 30 | Stoichiometric calculations, | Video: Chemical reaction | One-minute paper |
| 31 | Limiting reactant, percentage yield | Exposition | - |
| 32 | Seminar 8. Lessons 30 and 31 | Exercises | |
| 33 | Solutions. Definition, solubility, concentration expressions | Exposition | One-minute paper |
| 34 | Exercises based on concentration expressions | Exposition | - |
| 35 | Test 5. Lessons 24 to 32 |
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| 36 | Types of solutes (non-electrolyte, strong and weak electrolytes). Colligative properties | Experiment: “Electrical conductance” | Directed paraphrasing |
| 37 | Henry’s law. Exercises based on colligative properties | Exposition | - |
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| Seminar 9. Lessons 37, 39 and 40 | Exercises | |