Answer:
D. Magnesium burns.
Step-by-step explanation:
The chemical property is demonstrated by option D. Magnesium burns.
A chemical property is a characteristic of a substance that is observed during a chemical reaction or chemical change. The burning of magnesium involves a chemical reaction with oxygen in the air, producing magnesium oxide. Therefore, this demonstrates a chemical property of magnesium.
The other options are physical properties. Aluminum conducting heat is a physical property that describes its ability to transfer thermal energy. Sulfur being a yellow solid is a physical property that describes its appearance and state at room temperature. Silver melting is a physical property that describes its change from a solid to a liquid state when heated.