Which of the following statements is true?
A. The total mass of the system remains same in a chemical change
B. A chemical change is permanent and irreversible
C. A physical change is temporary and reversible
D. All of the above
Answer D) All of the above
According to the law of conservation of mass, mass is neither created nor destroyed in chemical reactions. So option A is true.
As we know that chemical change is permanent and we cannot convert the product into the reactant. While physical is temporary and reversible. Like turning of water into ice is a physical change.
Therefore, All the options are true.