Question

why are atoms considered to be conserved during chemical reactions? *
atoms are conserved because atoms disappear during the reaction.
atoms are conserved because only molecules change, not atoms.
atoms are conserved because new atoms are created during the reaction.
atoms are conserved during chemical reactions because the total number of each type of atom remains the same before and after the reaction.

Explanation:

In chemical reactions, atoms are not created or destroyed. The law of conservation of mass states that the total number of each type of atom remains constant before and after the reaction. Molecules break apart and recombine, but the atoms themselves persist.

Answer:

Atoms are conserved during chemical reactions because the total number of each type of atom remains the same before and after the reaction.