Which term is the quantity of matter in an object?

Which term is the quantity of matter in an object?

• A. Weight
• B. Force
• C. Inertia
• D. Mass

Answer: (D)

Mass is the amount of matter in an object. It tells you how much stuff there is and is measured in kilograms. Mass stays the same regardless of location, while weight changes with gravity. Inertia—the resistance to changes in motion—depends on mass, so more mass means more inertia, but that doesn’t describe how much matter, just how hard it is to change motion. Force is the push or pull acting on an object, not a measure of how much matter there is. So the term that describes the quantity of matter is mass.

Mass is the amount of matter in an object. It tells you how much stuff there is and is measured in kilograms. Mass stays the same regardless of location, while weight changes with gravity. Inertia—the resistance to changes in motion—depends on mass, so more mass means more inertia, but that doesn’t describe how much matter, just how hard it is to change motion. Force is the push or pull acting on an object, not a measure of how much matter there is. So the term that describes the quantity of matter is mass.