I wouldn't know how to solve this question since I don't have all the information given to solve this problem. But I'm going with a hypothesis, but if given more information I would be glad to help.
<span>an atom with a single electron in its outermost shell</span>
The stomach. the place where your food sits for a while after you have chewed it up and swallowed.
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
