Answer: It loses electrons to another element.
Explanation:- Oxidation is the process in which an element loses electrons and there is an increase in the oxidation state. On losing electrons it combines with a electronegative element such as oxygen, sulphur or nitrogen etc.

Reduction is the process in which an element gains electrons and there is a decrease in the oxidation state.

So in one hour half the amount remains (that's what half life means). In two hours 1/4 (or half of half) would remain and in three hours 1/8 would remain.
So the answer is 1/8
Answer: D!! ( difference in the potential energy of the reactants and products )
Explanation:
i have the same test
Answer:
c
Explanation:
it could honestly be wrong but I'm not sure
<span>One degree Celsius indicates the same temperature change as one </span>