Which statement best defines viscosity?

Which statement best defines viscosity?

• A. Liquids resistance to flow
• B. Liquids density
• C. Liquids color
• D. Liquids boiling point

Answer: (A)

Viscosity is a liquid’s resistance to flowing. It describes how thick or thin a liquid behaves: high viscosity means the liquid flows slowly (like honey), while low viscosity means it flows easily (like water). Temperature also affects it—heating generally lowers viscosity, making liquids flow more readily. Density, color, and boiling point are different properties: density is mass per volume, color relates to light absorption, and boiling point is the temperature at which a liquid becomes gas. So, the statement that best defines viscosity is that it measures a liquid’s resistance to flow.

Viscosity is a liquid’s resistance to flowing. It describes how thick or thin a liquid behaves: high viscosity means the liquid flows slowly (like honey), while low viscosity means it flows easily (like water). Temperature also affects it—heating generally lowers viscosity, making liquids flow more readily. Density, color, and boiling point are different properties: density is mass per volume, color relates to light absorption, and boiling point is the temperature at which a liquid becomes gas. So, the statement that best defines viscosity is that it measures a liquid’s resistance to flow.