Question

Which is a chemical property of iron?

It forms iron oxide (rust) when exposed to moisture and air.

It is a gray–black metal that is hard to the touch.

It has a melting point of 2795°F (1536°C).

It is a good conductor of heat.

Answer 1

A. It forms iron oxide (rust) when exposed to moisture and air.

that is the correct answer on Plato

Answer 2

It forms iron oxide (rust) when exposed to moisture and air.

That is the chemical property, others are physical property.