QuestionAugust 7, 2025

Which of the following is a molecule? A) carbon B) carbon dioxide C) sugar D) salt

Which of the following is a molecule? A) carbon B) carbon dioxide C) sugar D) salt
Which of the following is a molecule?
A) carbon
B) carbon dioxide
C) sugar
D) salt

Solution
4.2(288 votes)

Answer

B) carbon dioxide Explanation 1. Identify Molecules A molecule is a group of atoms bonded together. It represents the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. 2. Analyze Options A) Carbon is an element, not a molecule. B) Carbon dioxide (CO_2) is a molecule composed of carbon and oxygen atoms. C) Sugar (e.g., glucose C_6H_{12}O_6) is a molecule composed of carbon, hydrogen, and oxygen atoms. D) Salt (e.g., sodium chloride NaCl) is an ionic compound, not a molecule.

Explanation

1. Identify Molecules<br /> A molecule is a group of atoms bonded together. It represents the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.<br /><br />2. Analyze Options<br /> A) Carbon is an element, not a molecule.<br /> B) Carbon dioxide ($CO_2$) is a molecule composed of carbon and oxygen atoms.<br /> C) Sugar (e.g., glucose $C_6H_{12}O_6$) is a molecule composed of carbon, hydrogen, and oxygen atoms.<br /> D) Salt (e.g., sodium chloride $NaCl$) is an ionic compound, not a molecule.
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