Answer:
D.) molecule
<h3>When the same or different atoms combine together they for a molecule</h3>
Answer:
none of the above is the answer
Consider the formation of water molecule. Hydrogen combines with oxygen to form a water molecule.
In this case, the total mass of the reactants = total mass of the products. Also, the number of atoms of hydrogen and oxygen in the reactants side and the products side are equal.
that's all I know