Image: Neon sign. Our world is made of elements and combinations of elements called compounds. An element is a pure substance made of atoms that are all of the same type.
Temp folder contains Scoped_Dir folders. My temp folder has only recently started filling up with Scoped_Dir..... Folders. I cannot located the program or service that is causing them. An internet search indicated the folders might be linked to Google chrome or steam but I don't think so.
that's why it's called Temp folder, it stores files temporary, you can delete all the files you want, those that won't let you it means that they are used. Don't worry, you won't delete anything important to harm Windows. Just skip the files that it doesn't let you delete and everything will be ok.