Question

how can some types of batteries be recharged?
a the chemicals in the battery are replaced.
b the batteries are cooled for long periods of time.
c electrical energy reverses the chemical reactions in the battery.
d batteries cannot be recharged.

Explanation:

• Option a: Recharging doesn't involve replacing chemicals; that's for disposable batteries' replacement, not recharging.
• Option b: Cooling has no role in recharging batteries; recharging is about chemical reactions, not temperature manipulation.
• Option c: Rechargeable batteries work by having electrical energy reverse the chemical reactions that occurred during discharge, allowing them to be reused.
• Option d: Many batteries (like lithium - ion, lead - acid) are rechargeable, so this is incorrect.

Answer:

c. Electrical energy reverses the chemical reactions in the battery.