- What part of the ocean absorbs a large amount of solar energy?

Compare and contrast physical changes with chemical changes.

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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?