When copper sulfate and zinc metal interact, an atom of zinc replaces an atom of copper while the sulfate molecule, made of 5 atoms, is unchanged. There are 7 atoms before and 7 atoms after the interaction. Why is this?
a
b
According to the equation presented, this answer is actually incorrect and there should be 5 atoms before and 6 atoms
after
According to the rule of chemical equations, the number 7 must be on the reactants and the products side every single
time.
According to the law of conservation of matter, the number of atoms must be conserved in an interaction, and there
are five atoms in sulfate, one copper atom, and one zinc atom to make a total of seven atoms. Therefore, there must
also be seven atoms after the interaction.
C С