Mass of a particular amount of substance 1. is the amount of matter present in it. 2. - does not vary from place to place. 3. changes with change in gravitational force. Select the correct answer using the code given below:

Mass is defined as the quantity or amount of matter present in an object [2]. It is an intrinsic property of a substance and remains constant regardless of its location in the universe. Unlike weight, which is the gravitational force acting on an object and varies based on local gravity, mass does not change from place to place [3]. Statement 1 is correct as it defines mass as the amount of matter [2]. Statement 2 is correct because mass is a scalar invariant that stays the same on Earth, the Moon, or in deep space. Statement 3 is incorrect because it is weight, not mass, that changes with variations in gravitational force [1]. Therefore, only statements 1 and 2 are accurate descriptions of mass.

Sources

1. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 9: The Amazing World of Solutes, Solvents, and Solutions > How to measure mass? > p. 141
2. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > A step further > p. 75
3. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > Snapshots > p. 77