N = 4 to n = 3 is the right answer, so it' none of the above
Answer:The 2nd and 3rd one.
Explanation:
It has the same number of protons but different amount of nuetrons.
The answer is elements gain electrons. Oxidation reduction is elements lose electrons. And oxygen is added/lost can be a type of oxidation/reduction reaction.
Answer:
1.- Chemical change
2.- Because the atoms in the image are tranformed into a new molecule
3.- Yes, it does
4.- Due to the amount of atoms are the same both in products and reagents
Explanation:
