What defines a molecule?

What defines a molecule?

• A. A group of atoms held together by chemical bonds
• B. The center of an atom
• C. A unit of energy
• D. A type of cell

Answer: (A)

A molecule is formed when two or more atoms are held together by chemical bonds. These bonds arise from sharing electrons (covalent bonds) or from electrical attraction between ions (ionic bonds), creating a discrete unit with its own properties. For example, water consists of two hydrogen atoms bonded to one oxygen atom, while oxygen gas is two oxygen atoms bonded together. An atom is a single element, not bonded to others, a unit of energy is a concept related to work or heat, and a type of cell is a biological unit. So the description of a group of atoms held together by chemical bonds best defines a molecule.

A molecule is formed when two or more atoms are held together by chemical bonds. These bonds arise from sharing electrons (covalent bonds) or from electrical attraction between ions (ionic bonds), creating a discrete unit with its own properties. For example, water consists of two hydrogen atoms bonded to one oxygen atom, while oxygen gas is two oxygen atoms bonded together. An atom is a single element, not bonded to others, a unit of energy is a concept related to work or heat, and a type of cell is a biological unit. So the description of a group of atoms held together by chemical bonds best defines a molecule.