Can you inflate a balloon without blowing it up? Try using baking powder and vinegar, what is happening? Try using different amounts of baking powder (but not too much!) What could you use instead of vinegar to have the same effect? Let us know how you get on.
Please send in any findings to your class teacher.
More information can be found here.
https://littlebinsforlittlehands.com/balloon-baking-soda-vinegar-experiment-kids/
