Light carries energy in packets, called quanta. This is why we call this quantum physics.

It is impossible to create an independent and identical copy of an arbitrary unknown quantum state,this does not preclude the state of one system becoming entangled with the state of another.

Matter also behaves like waves as it relates a moving particle's wavelength with its momentum.

Momentum conservation itself can be seen as a consequence of spacial translation symmetry, this symmetry remains in quantum mechanics, so momentum conservation still applies.

Change must happen in a way that increases entropy.

The boundary between matter and energy is not always in a state of stability or finite...