MATTER IN OUR SURROUNDINGS
Matter, by definition, is anything that has mass and occupies space. It is composed of tiny, discrete particles. This concept is fundamental in understanding the physical nature of matter. The particle theory of matter suggests the following key points:
1.Particles are Extremely Small: The particles constituting matter are incredibly small and not visible to the naked eye. They require advanced scientific instruments like electron microscopes to be seen.
2.Particles are in Constant Motion: These particles are always in motion, and the speed of this motion depends on the state of matter (solid, liquid, or gas). In solids, the particles vibrate in fixed positions; in liquids, they move more freely; and in gases, they move rapidly and randomly.
3.Particles Attract Each Other: There are forces of attraction between particles of matter, which keep them together. The strength of these forces varies in different states of matter. For example, the forces are strongest in solids and weakest in gases.
4.Particles Have Space Between Them: There are spaces or gaps between particles of matter. The amount of space depends on the state of matter. In gases, the spaces are the largest, in liquids they are moderate, and in solids, they are minimal.
The particles of matter are extraordinarily small, which can be illustrated through several examples and scientific experiments: