The principle of conservation of matter states that matter is neither created nor destroyed, but it can

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?

Who discovered a pattern to the elements in 1869?

What methods could you use to solubilize calcium carbonate