| Experiment 7.1 Testing for oxygen and carbon dioxide |  | | |
| Experiment 7.2 Testing for water and water vapour | | | |
 Experiment 7.3 Testing for starch in green leaves | | | |
| Experiment 7.4 Testing for oxygen produced by photosynthesis | | | |
| Experiment 7.5 Investigating the factors necessary for photosynthesis | | | |
| Experiment 7.6 Heating a small amount of water by burning food | | | |
| Experiment 7.7 Gas exchange in plants | | | |
| Experiment 7.8 Observing stomata under a microscope | | | |
| Experiment 7.9 Comparing the oxygen and carbon dioxide contents of inhaled air and
exhaled air | | | |
| Experiment 7.10 Comparing the water vapour content of inhaled air and exhaled air | | | |
| Experiment 7.11 Comparing the temperature of inhaled air and exhaled air | | | |
| Experiment 7.12 Studying the gas exchange in mealworms | | | |
| Experiment 7.13 Observing the structure of pig's lungs | | | |
| Experiment 7.14 Observing how smoking affects the pig's lungs | | | |