Cool it | In search of more solutions | 14–16 years

Use this practical problem-solving activity to enhance learning about endothermic reactions and link classroom learning to the issue of climate change and global warming.

Learners will practice investigative skills such as method writing, presenting results and drawing conclusions as they work in small groups to devise a method of reducing the temperature of water to 6.5°C using citric acid and bicarbonate of soda. Download the presentation slides, student worksheet, teacher and technician notes.