kinetic theory
The particles move because of the Kinetic Theory. Matter is composed of particles that are atoms, molecules, or irons that always are in random motion.(Honestly you don't need to copy the hole matter is composed.... thing but just in case you might need it.)
Is sound considered as matter? No, matter is composed of atoms and particles, and sound is a perceptible motion (vibration) of material things.
Brownian motion demonstrates that matter is composed of small, invisible particles that are in constant random motion. It also shows that matter is influenced by collisions with other particles, leading to the random movement observed.
Matter is any substance that has mass and takes up space. It is composed of particles such as atoms and molecules that are in constant motion.
Brownian motion provided evidence for the kinetic model of matter by observing the random movement of particles in a fluid. This motion was consistent with the idea that matter is composed of tiny particles in constant motion, supporting the kinetic theory. By studying the erratic movement of particles under a microscope, scientists were able to indirectly observe the existence of atoms and molecules.
The particle theory of matter states that all matter is made up of tiny particles that are constantly in motion. These particles have space between them and are attracted to each other. Changes in state of matter are due to the arrangement and movement of these particles.
Particles of matter are always in constant motion.
Atoms, which are in turn composed of sub-atomic particles.
This theory is known as the Kinetic Molecular Theory. It states that all matter is composed of particles (atoms, molecules, or ions) that are in constant motion. The theory helps explain the behavior of gases, liquids, and solids based on the movement of these particles.
Matter is composed of particles (atoms or molecules) that are in constant motion and have kinetic energy. These particles are always moving, bouncing off each other and the container they are in. The state of matter (solid, liquid, gas) is determined by the speed and arrangement of these particles.
The question's a little sketchy, but I think you're looking for motion. The particles of matter are always in motion.
atoms