🔍 Key Concepts

• Primary vs. secondary cells in batteries • What happens to electrodes during discharge and recharge • The difference between rechargeable and non‑rechargeable batteries

💭 Think About

• Think about common household disposable batteries: are they meant to be recharged, and why or why not? • If a battery’s electrode material is physically consumed or eroded during use, what does that imply about restoring it by charging? • Compare what is true about all primary cells versus what might be true only about some battery types.

✅ Before You Answer

• Clarify the definition of a primary cell (single‑use vs multi‑use). • Check whether attempting to recharge a primary cell changes the fact of whether it can or cannot be properly recharged. • Make sure each chosen option must be always true for primary cells, not just sometimes true.