Anyone who knows, can you simply explain what Quantum Physics is

Please explain to us common folk what Quantum P. is.
If I had to explain this to a friend who isn't educated how would I explain it?

Quantum Physics (or Quantum Mechanics) is the story of the very very tiny. Particles make up all that we know ... both matter and energy. QM describes the particles, how they relate and are organized, and how they give rise to the various forces of nature; electromagnetic (light), gravity, the weak and strong nuclear forces.

Quantum mechanics, also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of the dual particle-like and wave-like behavior and interaction of matter and energy. The theory was discovered in 1925 by Werner Heisenberg.[1] Heisenberg was awarded the Nobel Prize in physics 1932 for this seminal achievement.[2] Quantum mechanics describes the time evolution of physical systems via a mathematical structure called the wave function. The wave function encapsulates the probability that the system is to be found in a given state at a given time. Quantum mechanics also allows one to calculate the effect on the system of making measurements of properties of the system by defining the effect of those measurements on the wave function. This leads to the well-known uncertainty principle as well as the enduring debate over the role of the experimenter, epitomised in the Schrödinger's Cat thought experiment.

Quantum mechanics differs significantly from classical mechanics in its predictions when the scale of observations becomes comparable to the atomic and sub-atomic scale, the so-called quantum realm. However, many macroscopic properties of systems can only be fully understood and explained with the use of quantum mechanics. Phenomena such as superconductivity, the properties of materials such as semiconductors and nuclear and chemical reaction mechanisms observed as macroscopic behaviour, cannot be explained using classical mechanics.