Which property set includes mass, weight, volume, and density?

• A. Mechanical properties
• B. Physical properties
• C. Chemical properties
• D. Thermal properties

Answer: (B)

Physical properties describe how much matter there is and how it occupies space, without changing the substance’s identity. Mass and volume are fundamental measures of how much matter there is and how much space it takes up. Density combines those two as mass per unit volume, giving a single property that relates mass to space. Weight is the gravitational force acting on that mass, so it’s closely related but depends on the gravitational field, not on the substance’s chemical makeup. Together, these quantities describe the amount of matter and its interaction with gravity, not how the substance reacts chemically or how it behaves under heat or mechanical stress. Mechanical properties cover how a material responds to forces, chemical properties describe reactivity and composition changes, and thermal properties involve heat and temperature behavior. So this set fits under physical properties.