1. Iron: A common metal that shrinks as it cools.
2. Copper: Another common metal, used in wiring and pipes, that contracts on cooling.
3. Ice: While water expands when it freezes (which is why it floats), solid ice itself contracts as its temperature drops further.
Important Note: There are a few exceptions to this rule. Water is the most well-known example, but some alloys and certain crystalline materials can exhibit anomalous expansion behavior under specific temperature ranges.
