The outer shell electrons are only involved in the bonding process since they are the only 'incomplete' shell and it needs to be fulfilled by another element.
its exothermic. exothermic means the reaction gives out heat. [exo meaning outside and thermic meaning heat] because its a combustion reaction, fire is there meaning lots of heat.
endothermic means it takes in heat. a good example is ammonium and water (NH3 +H20)
<span>most chemical reaction are exothermic</span>
Answer:
in the air and soil
in drinking water
on and inside the human body
Explanation: Hope that helps
Try this solution, all the details are described in the attached picture.
Answer:
It’s twice as much as 9+10
Explanation: