In a voltaic cell, electrons flow from the ?

to the ? in the external circuit.
1. cathode; anode
2. products; reactants
3. anode; cathode
4. reactants; products

Electrons flow from the negative to the positive electrode. In a voltaic cell, the anode is -.

The correct answer is 3. anode; cathode.

To determine the correct answer, it's helpful to understand the basic structure of a voltaic cell. A voltaic cell, also known as a galvanic cell, consists of two half-cells: the anode and the cathode.

In the anode half-cell, oxidation occurs, and electrons are produced. In contrast, in the cathode half-cell, reduction occurs, and electrons are consumed. The anode is where oxidation takes place, while the cathode is where reduction takes place.

In the external circuit, electrons flow from the anode to the cathode. This electron flow is what creates an electric current that can be used to power devices or do other work. Therefore, the correct answer to the question is that in a voltaic cell, electrons flow from the anode to the cathode in the external circuit.