Chapter U2.8, Problem 1TAI

Interpretation Introduction

Interpretation:

Change in the molecules during creation of a new smell is to be explained.

Concept introduction:

There is need of changing a chemical molecule into another molecule that is not found in nature but has good properties. Sometimes one synthesizes molecules that have immense value. During chemical reactions new molecules are created with new properties and structures.

Answer to Problem 1TAI

During chemical reactions to produce molecules with new smell, some bonds are broken and some new bonds are made. The end result is a new molecule with a different smell. The new molecules have new properties and new chemical structures. Through chemical equations, one can track the changes that occur in reactants to form products.

Major changes in the molecules occur where functional groups are located. Acids and alcohols can be made to react to form esters and water. In a chemical reaction no matter is created or destroyed. Matter is conserved. Only re-arrangement of atoms occurs.

Explanation of Solution

New compounds can be synthesized from old compounds through chemical reactions. During a chemical reaction some bonds are broken and new bonds are created between atoms such that a new molecule with new set of properties is made. If the functional group changes the new molecule has different smell.

Chemists work in laboratory to produce a specific compound by the process of synthesis. Synthesis is a process in which two or more simple compounds combine together to form a new compound. For example:

Acid + alcohol → water + ester

The −OH group breaks off from the acid and H−O bond in alcohol also breaks. A new bond forms between larger molecules to form an ester. The H− and −OH pieces come together to form water molecule.

There are same numbers of each type of atom on both sides of the equation. Matter is conserved.

Conclusion

In the process of creating new molecules, some bonds break and some new bonds are formed. There is a change in functional group and so the new molecule has new smell but the total matter remains conserved during a chemical reaction.