A balloon is rubbed against a student's

hair and then touched to a wall. The balloon

"sticks" to the wall due to

Static electricity, the negative ionic charge of the balloon is attracted to the positive ionic charge of the wall

Answer: Balloon stick to wall because of establishment of static electricity. The reason that the balloon will stick to the wall is because the negative charge in the balloon will make the electrons in the wall move to other side (because of like charge repel) and this leaves the surface of the wall positively charged.