It is important to balance the chemical equations to satisfy the law of conservation of mass. Which of the following statements of the law is incorrect?
A. The total mass of the elements present in the reactants is equal to the total mass of the elements presents in the products.
B. The number of atoms of each element remains the same, before and after a chemical reaction.
C. The chemical composition of the reactants is the same before and after the reaction.
D. Mass can neither be created nor can it be destroyed in a chemical reaction.
Answer:C
It is important to balance the chemical equations to satisfy the law of conservation of mass. Which of the following statements of the law is incorrect?
A. The total mass of the elements present in the reactants is equal to the total mass of the elements presents in the products. B. The number of atoms of each element remains the same, before and after a chemical reaction. C. The chemical composition of the reactants is the same before and after the reaction. D. Mass can neither be created nor can it be destroyed in a chemical reaction.