Philosophically, "matter" is whatever pre-existed consciousness and exists independently of it.
It is not mechanically interacting particles with only quantifiable properties like mass and volume.
It is energy changing dynamically and qualitatively.
In fact, quantitative change becomes qualitative.
Cause and effect can be two objects or two properties of one object.
Molecular motion causes fluidity.
Molecular cohesion causes solidity.
Neurally processed organismic sensitivity causes consciousness.
Neurons fire electrically and interact electrochemically.
Properties of matter include motion, fluidity, cohesion, solidity, sensitivity, electricity, electrochemistry and consciousness.
Consciousness is a qualitatively unique material property, not an immaterial substance.
Matter has become conscious.
