Chapter 2, Problem 71A

Interpretation Introduction

Interpretation: Whether elements, compounds or mixtures are seen mostly in our surroundings like a kitchen and a park needs to be explained.

Concept Introduction: An element is a substance that cannot be decomposed further into simpler substances by any chemical process. On the other hand, compounds are composed of two or more elements. They can be decomposed into their elemental components. A mixture in solid, liquid, or gaseous form is said to be homogenous if it has the same proportions of components throughout the sample. Thus, in any homogenous mixture, only one phase of matter is observed. In heterogeneous mixtures, the components of the mixture can be easily identified. There is more than one phase and can be seen by the naked eye. It has a non-uniform composition.

Explanation of Solution

In the surrounding, there is the possibility of the presence of all elements, compounds, and mixtures. When we look around, the soil is an example of a mixture as it contains several elements and minerals. Another example of a mixture is air as it contains different gases and water. The swings in the park are made up of iron which is an element. Also, utensils in the kitchen are made up of iron and aluminum which are elements. There is water, salt, and other compounds like baking powder, dishwasher, etc. present in the kitchen; thus, we can see elements, compounds, and mixtures all around us.