Question

which of the following statement is/are true? A) The total mass of the substance remains same in a chemical change. B) the chemical change is permanent and irreversible. C) A physical change is temporary and reversible. D) All of these

Answer 1

Answer:

all of these..

Explanation:

A) is true as in chemical change mass remains Constant and conserve..by the law of conservation of mass .

B) is true as chemical change is permanent and irreversible because we can't get the reactant in normal chemical rxn by physical processes....

C) is true as a physical change is temporary and reversible because we can get the used things by physical processes..

hope this will help you..

Answer 2

Answer:

D : All of these

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