Chapter U1.8, Problem 7E

Interpretation Introduction

Interpretation:

The two long-term impacts on this planet of the concept which says matter cannot be created or destroyed needs to be explained.

Concept introduction:

According to the law of conservation of mass, the matter cannot be created nor destroyed in any chemical reaction.

Explanation of Solution

The two best examples for “Matter cannot be created or destroyed” law are water and carbon cycles.

1. Water cycle:

Water evaporates from the earth and after the formation of clouds, they return to earth in the form of rain.

2. Carbon cycles:

The carbon dioxide is exhaled by humans and that is used by plants for photosynthesis.

The oxygen is released by plants during photosynthesis and that is used by humans for respiration.

Thus, water and carbon cycles are the best examples of the law of conservation of matter (“Matter cannot be created or destroyed”).