Question

Which of the following most likely happens during a chemical change? No new substances are formed. Properties of a substance remain unchanged. Composition of a substance is same as before. Different atoms than before are introduced after the change

Answer 1

Different atoms are introduced in the change.

Answer 2

Answer: During a chemical change, different atoms are introduced after the change than before the change.

Explanation: Chemical reactions are defined as the reaction in which two or more substances react to form a new substance. The composition of the reactants change completely when the product is formed in a chemical reaction.

For example: Formation of rust when iron metal is exposed to air and moisture for a long time.

Equation follows:

$2Fe(s)+\frac{3}{2}O_2(g)\rightarrow Fe_2O_3$

So, During a chemical change, different atoms are introduced after the change than before the change.