Here's a breakdown:
* Matter: Anything that takes up space and has weight.
* Mass: A fundamental property of matter that measures its inertia (resistance to changes in motion) and its gravitational attraction to other objects.
Units of Mass:
* Kilogram (kg): The standard unit of mass in the International System of Units (SI).
* Gram (g): One thousand grams equal one kilogram.
* Pound (lb): A unit of mass commonly used in the United States.
Measuring Mass:
* Scales: Used to measure mass by comparing the object's weight to a known standard.
* Balances: Used to compare the mass of an object to a known standard by balancing them on a lever.
Important Note: Mass is different from weight. While weight is the force of gravity acting on an object's mass, mass is an intrinsic property of the object itself.