Select the statements that correctly describe the term viscosity. a. The viscosity of each substance is a constant value that will never change. b. This quantity is high for substances that are resistant to flow. c. This quantity is low for water and acetone. d. Viscosity can be defined as a substance's ability to resist flow.

D. VISCOSITY can be defined as a substance's ability to resist flow.

Explanation:

This is the statement that correctly describe the term viscosity. Viscosity explains why substances or fluids resist flow. It shows that internal friction or resistance to flow revealed by a substance. A substance with high viscosity or internal friction resist flow and one with low viscosity flow easily. Viscosity of a substance change base on various factors affecting the substance such as pressure, temperature, surface area. Substances like water has low viscosity explaining why it flows easily.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements