After eating, people usually put their remaining food inside a bowl and use the platic wrap to cover it on the top of it. And the mystery is, why is the platic wrap stick to the bowl or even itself? And does it work on metal bowl, too?

Those are the mysterious events that take place in our real life. However, it seems to be only a few people would notice and try to come up an adequate explanation. Most of the people are just knowing that, but they wouldn’t know the reason behind it. And those people also include me. I don’t know the reason for that, either. But, I am trying to come up with my own explanations that are persuasive.

My explanation is the following:

The plastic wrap is a kind of material that will result in electron transfer when you attemp to put in onto the other objects, such as bowls. And I think that because the electrons transfer from the one to the other, it will result in one become a little bit positive and the other become a little bit negative. (They were both neutral at beginning. ) Everybody knows that positives will attract with the negatives, and that’s the reason why that works. (In my explanation )

And that didn’t work on a matal bowl because the matals are electricity condictors, which means that the elctrons are freely moving in the metal bowl. And since the excess electrons on the plastic wrap are all transfer out to the metal bowl, there will be like zero in net charge (neutral) on the platic wrap. So the plastic wrap can no longer stick to the metal bowl. But on the other hand, non-metal bowl will leave the excess electrons on the plastic wrap still. So there are charges differences between them. (plastic wrap is charged, and the bowl is not charged.) Those two things will stick to each other.

Sorry about the wordings, I think I might not use them properly. But I think that makes sense for, at least, myself.  But I don’t know how to explan things in an imagination way, which people can’t really take a look as they were an atom.