The answer is powder because if it was a small crystal it the molecules are tightly compact same with the small cube but there less compact, powder is loose and more spread out and easier to mix so it would react the fastest
Alpha particles are relatively heave and can be stopped by a sheet of paper.
I think the answer is 2Mg + H2O4 = Cu12O4 + 2H
I’m really not sure though so it might be wrong… I’m not the best at balancing equations lol
A solid is hard and the molecules are packed together, a liquid can move around freely because the molecules aren't as packed together :)
Both of them have high electronegativity. Hence they both tend to gain electrons to gain stability.
