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 has 4 laws: 1) All matter is composed of particles 2) Each of these particles have spaces between them 3) These particles are always in a constant state of motion 4) Because some particles are Negative, & some Positive, they are attracted to each other.
Particles of matter are always in constant motion.
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.
According to the kinetic theory of gases a gas consists of a large number of atoms or molecules. These are in a constant random motion and collide with one another as well as the walls of the container.
Atoms, which are in turn composed of sub-atomic particles.
The question's a little sketchy, but I think you're looking for motion. The particles of matter are always in motion.
atoms