Electrical cells and circuits
What is a cell?
A cell is a source of electrical energy and generates electricity by using chemical reactions.
What does an electrical cell consist of?
An electrical cell consists of two solid electrodes that areaee from different materials in an electrolyte.
What is electrolyte?
An electrolyte is a solution that can conduct electricity and consists of thousands of ions.
Explain how there is a flow of electrical charge through an external circuit.
1. Electrodes allow the current to
enter the cell.
2. A chemical reaction takes place in
the cell when the two electrodes.
are connected.
3. The chemical reactions cause the
flow of electrical charge through
an external circuit.
Explain how a cell is a source of electricity.
The chemical material in a cell contains chemical potential energy, which is converted to kinetic energy when it is connected to a circuit.
When is a cell flat?
A cell is flat when the chemical energy in the cell is depleted.
What is a dry cell and what is a wet cell?
> A dry cell uses a solid electrolyte.
instead of liquid.
> A wet cell uses a liquid electrolyte.
solution to generate electricity.
What is the difference between a cell and a battery?
A cell is a single unit that converts chemical energy into electrical energy.
A battery is a collection of cells that converts chemical energy into electrical energy.