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Multiple Choice
In the classification of matter, organic compounds are defined as carbon-containing compounds. All organic compounds contain which element?
A
Nitrogen (N)
B
Sodium (Na)
C
Oxygen (O)
D
Carbon (C)
Verified step by step guidance
1
Understand the definition of organic compounds: Organic compounds are primarily defined as compounds that contain carbon atoms bonded to other elements.
Recall that the key characteristic of organic compounds is the presence of carbon (C) atoms in their molecular structure.
Recognize that while organic compounds often contain other elements such as hydrogen, oxygen, and nitrogen, the essential element that must be present is carbon.
Review the options given: Nitrogen (N), Sodium (Na), Oxygen (O), and Carbon (C). Among these, only carbon is a required element in all organic compounds.
Conclude that the element present in all organic compounds is carbon (C), which is the defining feature of organic chemistry.