Nothing. Quantum is a branch of physics
It most certainly is! It has to do with things that are very small. Atomic [or Nuclear] Physics is essentially the study of the quantum world.
Quantum physics is a broader field that encompasses the study of the behavior of matter and energy at the smallest scales, while quantum mechanics specifically refers to the mathematical framework and principles used to describe the behavior of particles at the quantum level.
Quantum Mechanics is a branch of physics describing the behavior of energy and matter at the atomic and subatomic scales. It explains it itself and Quantum Physics is the same deal. They're just two different ways in saying it.
There is none. To study particle physics you use the whole machinery of quantum physics, but written down in a different way. That means particle physicists use the formalism of quantum field theory, which is a more powerful way of doing quantum mechanics, it's just more useful in this context.
Nothing. Quantum physics does not apply to physical things.
Atomic physics and nuclear physics.
Quantum mechanics is a separate branch of physics. It is a general term given to all quantum physics. There are many subbranches, for example Quantum chronodynamics which describes the strong nuclear interaction.
Physics Branches: Classical Mechanics Mathematical Physics Classical Electrodynamics Quantum Mechanics Thermodynamics and Statistical Mechanics Condensed Matter Physics Nuclear Physics Quantum Field theory Non-Linear Dynamics Astronomy and Astrophysics General Theory of Relativity and Cosmology
Quantum physics is an area of physics that focuses mainly on the properties and behaviour of sub-atomic particles. Physics in general can be the study of anything from the life cycle of a star to the effects of gravitational fields.
Physics Branches: Classical Mechanics Mathematical Physics Classical Electrodynamics Quantum Mechanics Thermodynamics and Statistical Mechanics Condensed Matter Physics Nuclear Physics Quantum Field theory Non-Linear Dynamics Astronomy and Astrophysics General Theory of Relativity and Cosmology
Newtonian, or classical physics applies to physical, every day things, while quantum physics is a type of theoretical physics that does not apply to any physical things.