| Select | | View | Download | | 3.1 Composition of sea water | | |
| 3.2 Extraction of common salt from sea water | | |
| 3.3 Isolation of pure water from sea water | | |
| 3.4 Choosing a method for separating a mixture | | |
| 3.5 Test for the presence of sodium in common salt | | |
| 3.6 Test for the presence of chloride in common salt | | |
| 3.7 Test for the presence of water in a sample | | |
| 3.8 Electrolysis of sea water and uses of the products | | |
| 3.1 Composition of sea water (bilingual version) | | |
| 3.2 Extraction of common salt from sea water (bilingual version) | | |
| 3.3 Isolation of pure water from sea water (bilingual version) | | |
| 3.4 Choosing a method for separating a mixture (bilingual version) | | |
| 3.5 Test for the presence of sodium in common salt (bilingual version) | | |
| 3.6 Test for the presence of chloride in common salt (bilingual version) | | |
| 3.7 Test for the presence of water in a sample (bilingual version) | | |
| 3.8 Electrolysis of sea water and uses of the products (bilingual version) | | |
| The ocean (combined version) | | |
| The ocean (bilingual, combined version) | | |