This is going to be a <em>phase </em>change!
<span>circumstellar is the answer</span>
Answer:
Exothermic Reaction
Explanation:
Its a combustion reaction and they are always exothermic in nature.
Answer: has properties similar to other elements in group 18, does not react readily with other elements, is part of the noble gas group
Explanation: I’ve done on edg before