What one property determines the state of matter of a substance? O Formula and Bond O The structure of the substance and the temperature. O The structure of the substance and the Bonds​

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?