Don't press too hard. Your hair should be clean, dry, and oil-free. Hold the balloon close to, but not touching, the paper circles. Watch what happens. Atoms are the teeny tiny particles that make up all matter.
Atoms have even teenier pieces, called electrons , that they wear like coats.
Sometimes the atom wears all its coats, sometimes it takes off one or more. When you rub the balloon on your hair, some of the electrons rub off and stick to the balloon. The confetti you made has a few electrons missing, so has a slight positive charge. Negative and positive charges attract each other. Atoms that have either a negative or positive charge we call ions .