What is is anode positive or negative?

The anode is generally considered the electrode where oxidation occurs. Whether it's positive or negative depends on the type of electrochemical cell.

• Galvanic Cells (Voltaic Cells): In a galvanic cell (like a battery), the anode is the negative electrode. Electrons are released at the anode due to oxidation and flow through the external circuit to the cathode.

• Electrolytic Cells: In an electrolytic cell (used for electrolysis), the anode is the positive electrode. An external power source forces oxidation to occur at the anode, drawing electrons away from it.