Salt bridge

Imagine you have two neighbors, one on each side of your house. They don’t like each other and they don’t want to talk to each other. So, you don’t want them to touch or mess with each other’s things.

Now, let's say one of your neighbors has a toy car which has a lot of energy and the other neighbor has a toy plane that also has a lot of energy. However, they need to share their energy to do some work. To do that they need to pass their energy through something which they can touch without disturbing each other. This something is a salt bridge.

A salt bridge is like a tiny little gate between two neighbors. It is a pathway that allows ions (charged particles) to move from one side to the other without messing with each other. This "gate" is made of a gel-like substance that has salt in it, hence why it’s called a salt bridge.

The ions travel from one neighbor to another through the salt bridge, creating a flow of electricity, which lets them work together without interfering or messing with each other. Without the salt bridge, the ions would mix and react with each other, causing a disturbance that could result in an explosion, which we don't want!

That's why the salt bridge is important, because it helps the neighbors share the energy they have without any problems. So, the next time you see a tiny little bridge between two neighbors, just remember that it’s like a salt bridge that helps them work with each other and not cause any trouble.