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Multiple Choice
Which of the following is not considered an organic molecule?
A
Methane (CH4)
B
Ethanol (C2H5OH)
C
Water (H2O)
D
Acetic acid (CH3COOH)
Verified step by step guidance
1
Understand the definition of an organic molecule: Organic molecules are primarily composed of carbon atoms bonded to hydrogen, oxygen, nitrogen, or other elements, but they must contain carbon-hydrogen (C-H) bonds.
Examine each molecule to determine if it contains carbon-hydrogen (C-H) bonds: Methane (CH4), Ethanol (C2H5OH), and Acetic acid (CH3COOH) all contain C-H bonds.
Consider the structure of water (H2O): Water is composed of two hydrogen atoms bonded to one oxygen atom and does not contain any carbon atoms.
Identify the molecule that does not fit the criteria of an organic molecule: Since water (H2O) lacks carbon and C-H bonds, it does not meet the definition of an organic molecule.
Conclude that water (H2O) is the molecule that is not considered organic, as it does not contain carbon or C-H bonds, unlike the other options provided.