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what are the particles of a fluid that attract eachother are called
Gases and fluids are all considered fluids which mean they are able to flow. This is because their particles are able to slide into each other. Solids, though some may seem to flow ( salt, sand ) are not able to because their particles are extreamly close together there for they are not able to slide into each other.
Diffusion. It happens because of the random motions of particles in a fluid.
The particles in a fluid must be able to move past each other easily, eg: Most gases and liquids
I don't think they exactly have a name for it. Its just called "The Surface". If you want the state of that substance its solid(when the particles are closest to each other) and gaseous(when the particles are farthest from each other). If you want the value of the cross-sectional area you have to give a value in your question. Other than that I don't think its called something other than a surface.
It is called Hydrogenica
what are the particles of a fluid that attract eachother are called
fluidity
Conduction.
Gases and fluids are all considered fluids which mean they are able to flow. This is because their particles are able to slide into each other. Solids, though some may seem to flow ( salt, sand ) are not able to because their particles are extreamly close together there for they are not able to slide into each other.
Diffusion. It happens because of the random motions of particles in a fluid.
They can seperate and they can also "flow"
That sounds like a description of heat conduction.
evidence that particles have spaces between each other
No, gas particles can touch each other when they collide.
Typically, the two particles that are attracted to each other are protons and electrons.
The particles in a fluid must be able to move past each other easily, eg: Most gases and liquids