Anode

Definition

The anode is the electrode where oxidation occurs in a galvanic cell. It is typically the negative terminal in such cells.

5 Must Know Facts For Your Next Test

1. In a galvanic cell, electrons flow away from the anode towards the cathode.
2. The anode undergoes oxidation, which means it loses electrons.
3. It is often made of a metal that easily oxidizes, such as zinc in a zinc-copper cell.
4. In the external circuit of a galvanic cell, current flows from the cathode to the anode.
5. The anode can be identified by observing which electrode decreases in mass.

Review Questions

• What process occurs at the anode of a galvanic cell?
• Why is the anode negatively charged in a galvanic cell?
• How can you identify the anode in a simple galvanic cell setup?

Related terms

Cathode:

The electrode where reduction occurs and is typically the positive terminal in a galvanic cell.

Oxidation:

A chemical reaction involving the loss of electrons by a molecule, atom, or ion.

Electrode:

A conductor through which electricity enters or leaves an electrochemical cell.