Which of the following is not an organic compound?


a. monosaccharide
b. formaldehyde
c. water
d. steroid

Verified step by step guidance

1. Identify the definition of an organic compound: Organic compounds are generally defined as chemical compounds that contain carbon-hydrogen (C-H) bonds.
2. Examine each option to determine if it contains carbon-hydrogen bonds.
3. Option a: Monosaccharides are simple sugars that contain carbon, hydrogen, and oxygen, typically in the form of Cn(H2O)n, which includes C-H bonds.
4. Option b: Formaldehyde is a simple organic compound with the formula CH2O, which contains C-H bonds.
5. Option c: Water (H2O) does not contain carbon, and therefore, it does not have C-H bonds, making it an inorganic compound.

Key Concepts

Organic Compounds

Organic compounds are primarily composed of carbon atoms and often contain hydrogen, oxygen, nitrogen, and other elements. They are the basis of all living organisms and include a wide range of substances such as carbohydrates, proteins, lipids, and nucleic acids. Understanding the characteristics that define organic compounds is essential for distinguishing them from inorganic compounds.

Inorganic Compounds

Inorganic compounds are typically defined as substances that do not contain carbon-hydrogen (C-H) bonds. They include minerals, metals, and gases like water and carbon dioxide. Recognizing the difference between organic and inorganic compounds is crucial for answering questions about chemical classifications in biology and chemistry.

Water as an Inorganic Compound

Water (H2O) is classified as an inorganic compound because it does not contain carbon. It plays a vital role in biological systems, serving as a solvent, a medium for chemical reactions, and a temperature regulator. Understanding the properties of water helps clarify its distinction from organic compounds like monosaccharides and steroids.