Which of the following best describes a molecule?

• A. A single atom with a positive or negative charge
• B. A particle found in the nucleus of an atom
• C. A group of two or more atoms chemically bonded together
• D. A mixture of different elements not chemically bonded

Answer: (C)

Verified step by step guidance

1. Understand the definition of a molecule: A molecule is formed when two or more atoms chemically bond together, sharing electrons to create a stable unit.
2. Analyze each option: The first option describes a single charged atom, which is an ion, not a molecule.
3. The second option refers to particles in the nucleus of an atom (protons and neutrons), which are subatomic particles, not molecules.
4. The third option correctly states that a molecule consists of two or more atoms chemically bonded together, which matches the definition of a molecule.
5. The fourth option describes a mixture of different elements not chemically bonded, which is a mixture, not a molecule.