Question

after winter over people generally pack of their woolens with both balls with the passage of time these both was become smaller in size what type of changes involved during this process​

Answer 1

Answer:

This happens because naphthalene balls go under the process of sublimation and slowly converted into gas from solid. This is a chemical change.The balls sort of evaporate. Its called sublimation ie.  Changing directly to gaseous form.in this decomposition reaction also takes place.