Balloons stick to walls after rubbing because static charge attracts the neutral surface.

The longer version

Rubbing a balloon against fabric transfers electrons onto its surface, leaving it with a net charge. A nearby wall is normally neutral, but the charges inside it can shift slightly, and opposite charges move a little closer while matching ones move away. That small separation creates an attraction.

The pull is weak but enough to hold a light object against gravity, and it fades as the charge leaks into the air or the surface. Humidity shortens the effect because water molecules carry charge away. The same balance of forces makes dust cling to screens, clothing and other dry surfaces.

Where this entry sits

Everyday physics and chemistry hide small wonders in plain sight, from kitchen reactions to the light in the sky. These short facts explain matter, energy, electricity, magnets, sound, and the simple units we use to measure the world. The full list sits on the Science and Physics page, where every entry is listed in order.