Itunes syncing question IPhone5s

Hi all. thanks a lot to the person who gave me the link to download Itunes for windows. I managed to add music to my itunes library and I also managed to sync my library with my phone. I just have a question. When I delete songs from my library and I then connect my phone to my pc and I sync my phone with my library, will the same songs be automatically deleted from my phone that I deleted from my library? many thanks for any feedback.