This video will show you how to demonstrate anaerobic respiration by filling a balloon using sugar and yeast. The equipment you will need for this experiment includes:

• Yeast
• Sugar solution
• Empty bottle with cap
• Balloon
• A spatula
   

Method:

• Use the spatula to transfer the yeast to the empty bottle
• Transfer the sugar solution to the bottle now with yeast
• Close the bottle with the cap and shake it for a few seconds
• Open the cap and insert the balloon over the bottle neck
• Leave the balloon until inflated, which can take up to 40 minutes