What happens when a particle and its corresponding particle of antimatter meet?

The combined mass of the two particles is completely transformed into energy (photons). The particle and the antiparticle are annihilated, turning all their mass into energy. Mass in physics is a property of a physical body. When a net force has applied a measure of an object's resistance to acceleration. It is also a large body of coherent matter with no definite shape. It is also the numerical measure of its inertia or the fundamental measure of the amount of matter in the specific object. Energy in physics in the ability of people to do work. There are many forms of work such as light energy, heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy and so on. 

The center is basically the heart of it