Understanding Cells and Batteries

What is the basic unit of life in all living organisms?

• Organism

• Tissue

• Molecule

• Cell

What are the main components of a battery?

• Resistor, Capacitor, Inductor

• Generator, Alternator, Relay

• Anode, Cathode, Electrolyte

• Solar Cell, Transformer, Diode

Explain the difference between a primary and a secondary battery.

• Primary batteries can be recharged multiple times; secondary batteries cannot.

• Primary batteries are used in large devices; secondary batteries are used in small devices.

• Primary batteries are non-rechargeable; secondary batteries are rechargeable.

• Primary batteries are rechargeable; secondary batteries are non-rechargeable.

What is the role of electrolytes in a battery?

• Electrolytes prevent corrosion in battery terminals.

• Electrolytes are used to cool the battery.

• Electrolytes store energy in a battery.

• Electrolytes enable ion movement and charge balance in a battery.

Describe how a lithium-ion battery works.

• A lithium-ion battery generates power by burning lithium metal.

• Lithium ions are stored in the electrolyte and do not move during operation.

• A lithium-ion battery operates by transferring lithium ions between the anode and cathode, generating electric current during discharge and storing energy during charging.

• Lithium-ion batteries work by converting chemical energy directly into heat.

What is the function of a cathode in a battery?

• The cathode releases anions during discharge.

• The cathode serves as the main power supply for the device.

• The cathode functions as the site of reduction and attracts cations in a battery.

• The cathode is the source of electrons in a battery.

What are the environmental impacts of battery disposal?

• Battery disposal has no impact on the environment.

• Battery disposal improves soil quality.

• Battery disposal can cause soil and water pollution, harm ecosystems, and contribute to landfill waste.

• Batteries can be safely burned without consequences.

How does a fuel cell generate electricity?

• A fuel cell generates electricity by burning fossil fuels.

• A fuel cell generates electricity through mechanical movement.

• A fuel cell generates electricity by using solar panels.

• A fuel cell generates electricity by converting chemical energy from hydrogen and oxygen into electrical energy through an electrochemical reaction.

What is the significance of voltage in a battery?

• Voltage is irrelevant to the battery's lifespan.

• Voltage is significant in a battery as it indicates the energy available to drive current in a circuit.

• Voltage determines the physical size of the battery.

• Voltage only affects the battery's weight.

Which advancements are occurring in battery technology?

• No improvements in lead-acid batteries

• Batteries that do not only require charging

• Advancements in solid-state batteries, silicon anodes, lithium-sulfur batteries, and improved recycling processes.

• Nickel-cadmium batteries are gaining popularity