Why are droplets of water that form on a cold glass a physical change?

The formation of water droplets on a cold glass are a physical change because it's nothing more than condensation. The water that is in the air is a gas, and it has undergone a change of state to become a liquid (the droplets). If the water and the glass fused and made another element that could not be made back into either of its two original forms, then it would be a chemical change.