it's good to be curious
Bascially, quantum physics is a rather new branch of physics.
Classical physics is what you are learning right now. Quantum
physics addresses things that classical physics cannot explain. One
example would be electrons being able to function like a wave, i.e.
undergoing diffraction. Classical physics states that only waves
can have diffraction, yet this phenomena was observed in an
electron beam
U will touch a little on the borderline of quantum physics at A
levels. You will learn light as a particle instead of a wave, and
electron beam as a wave instead of a particle => wave-particle
duality. However, that's not all. There are still theories on
gravities as particles (gravitons), and many other other things...
The list is very long
