What is the role of a functional group in an organic compound?

Explanation

### Step-by-Step Solution

1. **Definition of Functional Group**: A functional group is a specific group of atoms within a molecule that is responsible for the characteristic chemical reactions of that molecule. It is a part of the organic compound that determines its properties and behavior in chemical reactions.

2. **Role in Organic Compounds**: The functional group plays a crucial role in determining the physical and chemical properties of organic compounds. It influences how the compound interacts with other substances and how it behaves under various conditions.

3. **Types of Functional Groups**: There are various types of functional groups, each imparting different properties to the compounds they are part of. For example:
- **Alcohol Functional Group (-OH)**: This group is responsible for the properties of alcohols. Compounds with this functional group can undergo reactions typical of alcohols, such as oxidation and dehydration.
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