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Chapter 24: Problem 11

Is ammonia an organic molecule? Explain.

Short Answer

Expert verified
Ammonia (NH3) is not considered an organic molecule because it does not contain carbon atoms, which are the primary requirement for a molecule to be classified as organic. Instead, ammonia is an inorganic nitrogen-based compound, consisting of one nitrogen atom bonded to three hydrogen atoms.

Step by step solution

01

Define organic molecule

An organic molecule is a molecule that contains carbon atoms, typically bonded to hydrogen atoms, forming a hydrocarbon backbone. These molecules are the basis of life and make up various compounds found in living organisms, such as proteins, carbohydrates, lipids, and nucleic acids.
02

Identify the chemical formula for ammonia

Ammonia is a compound with the chemical formula NH3. It consists of one nitrogen atom bonded to three hydrogen atoms.
03

Compare ammonia to the definition of an organic molecule

Now that we know ammonia's chemical formula, we can compare it to the definition of an organic molecule. Ammonia consists of nitrogen and hydrogen atoms but does not contain any carbon atoms, which are the primary requirement for a molecule to be classified as organic.
04

Draw the conclusion

Based on the comparison, ammonia (NH3) does not contain carbon atoms, and therefore, it is not considered an organic molecule. It is classified as an inorganic molecule, specifically a nitrogen-based compound.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Organic Molecules
Organic molecules are the building blocks of life, found in all living organisms. They are unique because they contain carbon atoms, which form the backbone of these molecules. Carbon鈥檚 ability to form four covalent bonds allows for the creation of complex and diverse structures. Therefore, organic molecules often include:
  • Carbohydrates: such as sugars and starches which serve as energy sources.
  • Proteins: composed of amino acids, essential for functions like enzyme activity and hormone production.
  • Lipids: fats and oils that store energy and make up cellular membranes.
  • Nucleic Acids: DNA and RNA, which carry genetic information.
These molecules are crucial for life processes as they participate in reactions, structure, and storage within biological systems. Their defining feature is the inclusion of carbon atoms, often bonded to hydrogen, oxygen, and other elements.
Carbon Atoms
Carbon atoms are the central feature of organic chemistry. What makes carbon so special is its versatile bonding ability. It can form four single covalent bonds, double bonds, triple bonds, and even chains with other carbon atoms. Each carbon atom can bond with up to four other atoms, making carbon compounds diverse and stable.
  • Carbon chains: These can be straight, branched, or ring-shaped, providing structural variety.
  • Functional groups: Atoms or groups of atoms can attach to carbon skeletons, influencing the chemical properties of the molecule.
Different arrangements of carbon atoms result in molecules with distinct shapes and functions, crucial in determining how organic molecules contribute to biological processes.
Inorganic Compounds
Inorganic compounds are those that do not contain carbon-hydrogen bonds. Unlike their organic counterparts, they are derived from non-living matter. Ammonia, with its chemical formula NH3, is a textbook example of an inorganic compound since it lacks carbon atoms.
  • Minerals: Essential for the structure and function of living organisms, like calcium and phosphate in bones.
  • Metals and non-metals: Elements or compounds like iron, copper, and oxygen are involved in numerous biological reactions.
  • Salts: Such as sodium chloride, are important for cellular functions.
Inorganic compounds play numerous roles in biological systems, from forming physical structures to participating in electron transfer and catalysis. The lack of carbon atoms differentiates them clearly from organic molecules, emphasizing the importance of carbon in the definition of what is considered organic.

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Most popular questions from this chapter

ndicate whether each statement is true or false. (a) Two geometric isomers of pentane are \(n\)-pentane and neopentane. (b) Alkenes can have cis and trans isomers around the CC double bond. (c) Alkynes can have cis and trans isomers around the \(\mathrm{CC}\) triple bond.

Indicate whether each statement is true or false. (a) Butane contains carbons that are \(s p^{2}\) hybridized. (b) Cyclohexane is another name for benzene. (c) The isopropyl group contains three \(s p^{3}\)-hybridized carbons. (d) Olefin is another name for alkyne.

Draw the molecular structure for (a) an aldehyde that is an isomer of acetone, (b) an ether that is an isomer of 1-propanol.

Acetic anhydride is formed from two acetic acid molecules, in a condensation reaction that involves the removal of a molecule of water. Write the chemical equation for this process, and show the structure of acetic anhydride.

Give the molecular formula of a hydrocarbon containing five carben atoms that is (a) an alkane, (b) a cycloalkane, (c) an alkene
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