what evidence is there in the diagrams to support the classification of these substances as elements​

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

Which statement best describes the flow of energy in this scenario

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?