1. It has mass: Matter occupies space and has mass. Mass is a measure of how much matter an object contains.

2. It occupies space: Matter takes up space, meaning it has volume.

3. It has inertia: Matter resists changes in its state of motion. Inertia is the tendency of an object to stay at rest or continue moving at a constant velocity unless acted upon by an external force.

4. It is composed of atoms: Matter is made up of tiny particles called atoms. Atoms are the basic building blocks of all matter and consist of protons, neutrons, and electrons.

5. It exists in different states: Matter can exist in different states, including solid, liquid, gas, and plasma. Each state has different properties due to the arrangement and movement of the atoms within it.

6. It can undergo physical and chemical changes: Matter can change its form or composition through physical or chemical processes. Physical changes alter the form of matter but not its chemical composition, while chemical changes involve the formation of new substances with different properties.

7. It is subject to the laws of physics: Matter obeys the fundamental laws of physics, such as the law of conservation of mass and energy.

In summary, matter is anything that has mass and occupies space. It is composed of atoms, exists in different states, and can undergo physical and chemical changes. Its fundamental characteristics are governed by the laws of physics.