If you rub a glass rod and silk together, the rod will then become positively charged, the metal ball will become negative,and the leaves will be positive, making it closer together ...
or
If you rub a glass rod and silk together, the rod will then become negatively charged, the metal ball will become positive,and the leaves will be negative, making it closer spread apart?
The glass rod gets a positive charge. See
49-physics121-lecture02-Physics-121-Electricity-Magnetism-Lecture-2Electric-Charge-lect-Education-ppt-powerpoint/
Whatever else happens depends upon the the experimental setup and precedure, whih are not adequately explained in your question.