Which term is composed of molecules?

• A. Matter
• B. Particles
• C. Elements
• D. Compounds

Answer: (B)

Matter is made of tiny building blocks called particles, and a molecule is a specific kind of particle formed when atoms bond together. Because molecules fall under the broader category of particles, the term that best describes something built from those molecular units is particles. This reflects the idea that the small units of matter—whether they’re atoms or molecules—are treated as particles in basic science, and many substances we study are described in terms of these particles. For example, water is a molecule, and as a substance it exists as particles in the material around us.