Question

how are molecules different from atoms? they consist of several atoms bonded together. they do not contain neutrons. they do not have nuclei. their particles do not have electrical charges.

Explanation:

To determine how molecules differ from atoms, we analyze each option:

• Option 1: Molecules are defined as groups of two or more atoms bonded together (e.g., \(H_2O\) has 2 H and 1 O atoms bonded). Atoms are single units of an element. This matches the difference.
• Option 2: Both atoms (except some like hydrogen - 1) and molecules (composed of atoms) can contain neutrons. So this is incorrect.
• Option 3: Molecules are made of atoms, and atoms have nuclei. So molecules also have the nuclei of their constituent atoms. This is incorrect.
• Option 4: Particles in molecules (like protons, electrons in atoms) can have electrical charges (e.g., electrons are negative, protons positive). So this is incorrect.

Answer:

A. They consist of several atoms bonded together.