Question

which statement is true? (1 point)
molecules are added and removed during chemical reactions.
atoms are added and removed during chemical reactions.
atoms always remain intact during chemical reactions.
molecules always remain intact during chemical reactions.

Explanation:

In a chemical reaction, molecules are broken apart and new molecules are formed. But atoms are not created, destroyed, or changed into other types of atoms. They just rearrange to form new substances. So, atoms always remain intact during chemical reactions.

Answer:

Atoms always remain intact during chemical reactions.