Battery Function and Reactions

The video explains how batteries work, detailing their components, chemical reactions, and electron flow. It covers the structure of batteries, including the cathode, anode, and insulator, and describes the oxidation and reduction reactions that generate energy. The video also discusses how electrons flow to complete circuits and the eventual depletion of battery materials, emphasizing the importance of proper disposal.

What is the primary function of a battery in electronic devices?

• To convert sound into energy

• To store data

• To push electrons from the negative to the positive terminal

• To generate heat

What is the role of the plastic wrapper on a battery?

• To store chemical energy

• To increase battery life

• To conduct electricity

• To provide information about the battery

Which material is used in the cathode to increase conductivity and energy density?

• Zinc

• Graphite

• Copper

• Aluminum

What is the purpose of the fibrous barrier inside a battery?

• To increase the battery's weight

• To store extra energy

• To allow ions to pass while preventing direct contact between cathode and anode

• To prevent the battery from overheating

What chemical reaction occurs when a hydroxide ion combines with a zinc atom?

• Sublimation

• Oxidation

• Reduction

• Neutralization

In a battery, what happens during the reduction reaction?

• Electrons are absorbed

• Electrons are released

• Heat is generated

• Light is emitted

Why do electrons flow from the negative to the positive terminal in a battery?

• Due to the repulsion of similar charges

• To generate sound

• To create a magnetic field

• Because of the insulator

What happens to the electrons that reach the positive terminal?

• They are converted into heat

• They are used in the reduction reaction

• They are stored for later use

• They are lost to the environment

What eventually causes a battery to stop working?

• The battery overheats

• The internal materials are depleted

• The battery becomes too heavy

• The battery loses its shape

Why is it important to properly dispose of used batteries?

• To increase battery life

• To reduce noise pollution

• To save space

• To prevent environmental damage