Question

Chemical Reaction
when a chemical substance combined with another substance to form new substance and the change which are accur during or before is colled chemical change example.. (1)Buring of wood (2)resting ot iron​

Answer 1

correct answer is to resting of iron as when the iron (Fe) combines with oxygen it forms a FeO which is a new substance

Answer 2

Rusting of iron and oxygen is a chemical reaction .

Explanation:

According to question

here fe +O2 react with each other and a new substance which we called rusting of iron .So we can say that rusting of iron is a chemical reaction.