Based on the above image, which of the following is true?
a. mass could have either been gained or lost during this chemical reaction because atoms always
change mass when they react.
b. mass was conserved in this chemical reaction because the same atoms are present in both the
products and the reactants.
c.
mass was lost in this chemical reaction because the atoms in the reactants are smaller than the
atoms in the products.
d. mass was gained in this chemical reaction because there are more atoms in the products than there
were in the reactants.