The term used for the amount of matter in an object is mass. Mass is a fundamental property of physical objects, indicating the quantity of material they contain, and it is typically measured in units such as grams or kilograms. Mass differs from weight, which is the force exerted by gravity on an object’s mass. Understanding mass is crucial in various scientific disciplines, including physics, chemistry, and engineering, as it affects object behavior in motion, energy requirements, and interactions with other objects.