Which term means 'Very small particle'?

Which term means 'Very small particle'?

• A. Alveoli
• B. Lymph
• C. Molecule
• D. Permeability

Answer: (C)

Think about how scientists describe tiny pieces of matter. A molecule is the smallest unit of a substance that is formed when atoms bond together, creating a discrete particle. That makes it a very small particle by definition, since it’s a single unit composed of even smaller atoms. The other terms aren’t about small particles: alveoli are tiny air sacs in the lungs, lymph is a body fluid, and permeability describes how easily substances pass through a barrier. So the term that means “Very small particle” is molecule.

Think about how scientists describe tiny pieces of matter. A molecule is the smallest unit of a substance that is formed when atoms bond together, creating a discrete particle. That makes it a very small particle by definition, since it’s a single unit composed of even smaller atoms. The other terms aren’t about small particles: alveoli are tiny air sacs in the lungs, lymph is a body fluid, and permeability describes how easily substances pass through a barrier. So the term that means “Very small particle” is molecule.