The substance's state (solid / liquid / gas), density, temperature, etc, is determined by motion and spacing of particles.
Arrangement of particles determind the phase
P-particles (All matter is made up of particles)I-identical (All particles in one substance are identical)S-spacing (There is different spacing between particles of different substances)A-attraction (Particles have a certain attraction to one another depending on the state)M-movement (Particles are in constant motion)
The motion of molecules in a solid will be extremely slow. The spacing is very close to one another.THe opposite is true of gas. The molecules are extremely fast and they are spaced far apart.
The spacing of particles refers to the distance between individual atoms or molecules in a substance. In solids, particles are closely packed and have minimal spacing, leading to fixed shapes. In liquids, the spacing is greater than in solids, allowing for fluidity while still maintaining some intermolecular attraction. In gases, particles are far apart, resulting in high energy and the ability to fill their container.
The particle spacing in evaporation refers to the distance between individual particles of a liquid as it transitions to a gaseous state. As the liquid evaporates, the spacing between particles increases, leading to the conversion of the liquid into vapor.
The particles are tightly packed so they vibrate.
Particle spacing is the closest together in solids. In liquids the spacing is close, however the particles have the freedom of movement. In gas, the particles have lots of kinetic energy, therefore they are far apart.
Brownian motion
Brownian motion is the random moving and mixing of particles.
Particles within are limited to vibrational motion, unlike the particles which make up liquids which can have vibrational & translational motion, and gaseous particles which have vibrational, translational and rotational motion.
In a gas, particles move randomly due to collisions with other particles and the container walls. The spacing between gas particles is relatively large compared to the size of the particles themselves. This randomness and spacing contribute to the properties of gases, such as their ability to expand to fill a container.
In gases, particles move freely and collide with each other and the walls of their container. These collisions are elastic, meaning that kinetic energy is conserved, and they occur without significant interactions between the particles beyond the point of collision. The random motion and spacing of gas particles result in minimal influence on each other's paths, leading to the overall behavior of gases being described by laws of probability and thermodynamics. As a result, the motion of individual gas particles is largely independent, though collective behavior can be observed in terms of pressure and temperature.