Name two substances which contract on heating

The two substance which contact on heating are

Water usually expands on heating but on a certain temperature it actually contract.

Water in between the temperature 0⁰ c – 4 C⁰

The other substance which shows same behaviour is Silver Iodide.

Two substance which contracts on heating is water (0⁰ c – 4 C⁰) and Silver Iodide