Question

balloons inflate when we blow air but plastic will not.why?

Answer 1

balloons are made up of latex that stretch easily but plastic won't as it has a rigid structure hence balloons inflate when we blow air but plastic wont hope that this helps you please mark this as the brainliest answer if you find it relevant enough to your question

Answer 2

balloon has the feature of elasticity ,where we can't find the elasticity aspect in the case of plastic.