Gamma rays have the highest penetrating power so it can only be stopped by thick layers of dense metal. :)
Hydrogen is composed of H atom and oxygen is composed of O atom. For water, it is composed by both H and O atom. If you burn hydrogen in oxygen, you can get water. And if you electrolysis water, you can get hydrogen and oxygen.
Water, <span>rusts a nail faster</span>
A the solid.
it’s solid because solid is harder than gas and liquid which makes it a greater structure