Final answer:
Matter is anything that has mass and takes up space. It can exist in different forms like solid, liquid, or gas.
Step-by-step explanation:
Matter is defined as anything that has mass and takes up space. It is the material substance that makes up the physical universe. Matter can exist in different forms, such as solid, liquid, or gas. For example, a rock, water, and air are all examples of matter.
Learn more about Definition of matter