Fizzy balloons – CO2 in school

Carbon dioxide (or CO2) is very important for life on Earth: it is found all around us in the air we breathe, it is one of the most important greenhouse gases, and it is fundamental in photosynthesis. Through a practical demonstration, this activity introduces students to CO2 showing them that it is heavier than air, it can be used to extinguish flames and that it can sometimes have fizzy reactions!