Coin Batteries
Batteries have three parts: an anode (-), a cathode (+), and the electrolyte. The anode and the cathode are what get hooked up to an electrical circuit.
A chemical reaction takes place inside the battery to cause a build-up of electrons at the anode. Electrons repel each other and try to go to a place with fewer electrons. The electrons go through the wire, lighting the bulb along the way. This electrochemical process changes the chemicals inside the battery, which is why batteries can only provide power for a limited amount of time.
In this Simple STEM Activity, the student’s task is to construct a battery with household materials.
Coin Batteries Resources:
