A.) Electrons are Shared in a covalent bond.
You can poach an egg which enfolded boiling water and stirring it and dropping a cracked egg in the water until it is fully cooked or you could hard boil and egg by boiling water and letting it cook 5,6 minutes tell you have a soft yellow center or which ever way you prefer
A vaccum unlike sound,light can travel through any matter including a great vacuum of nothing (space)
