Question

what is the physical nature of matter

Answer 1

Physical properties of matter can be observed and tested. They include properties such as color, length, volume, odor, and density. These properties are extensive if they depend on the amount of the substance being used or intensive if they do not depend on the amount of substance being used.

Answer 2

Anything that has mass and occupy space called matter .
I could be anything like solid ,liquid or gas
Either acid , base and salt