Chapter 5, Problem 9STP

Interpretation Introduction

Interpretation:

The evidence whichdoes not represent a chemical change needs to be identified.

Concept introduction:

Physical property is the characteristic of any substance measured or observed without losing the identity of thesubstance. It includes color, hardness, density, melting and boiling points. On the other hand, chemical property describes the ability of any substance to undergo the specific chemical change.

Answer to Problem 9STP

The correct option is D.

Explanation of Solution

Chemical properties can be describes as the ability of substance undergoing specific chemical change. In accordance with the law of mass conservation, mass of a substance can neither be created nor destroyed during a chemical reaction i.e. the mass remains same. Hence, the total mass of the substances involved in the reaction remains same. Hence, the correct option is D.

Conclusion

The statement ‘‘Change in the total mass of the substances involved in the reaction’’ is not correct in accordance with the law of conservation of mass. Hence, the correct option is D.