Which statement correctly explains how matter is conserved in chemical reactions?
a
The states of matter of the reactants are always the same as the states of matter of the products.
b
The number of atoms in the reactants is always equal to the number of atoms in the products.
c
The number of reactants is always equal to the number of products.
d
The number of molecules in the reactants is always equal to the number of molecules in the products.
b
The number of atoms in the reactants is always equal to the number of atoms in the products.