Chemistry States of Matter
States of Matter
Happens quicker in gases due to the less amount of particles & that they are faster & less dense.
It will happen even quicker in hot gases.
Can be diffusion in liquids too
Because the particles in liquids move around each other, but slower than a gas - making liquid diffusion slower.
Movement of particles that allows them to spread out and mix with other particles
For diffusion to happen - particles need to be moving - this is why there is no diffusion in solids
A gas starts in high concentration - then diffuses (spreads out) to areas with low concentration of the gas.
When chemicals are let loose in a room the particles mix with air particles. The chemicals’ particles move quickly in all directions. They eventually spread out through the room.
Higher molecular mass - meaning liquid/gas is heavier
Cannot be compressed
Particles ordered/ arranged in rows & columns (unless not pure)
Vibrate in fixed positions
The Particle Model
Solid to liquid = melting
Liquid to solid = freezing
Liquid to gas = boiling
Gas to liquid = condensing
Solid to gas = subliming
Gas to solid = subliming/deposition
Solid heated, particles gain energy & become disordered
Able to move over one another, whilst still touching
Now a LIQUID
Does not compress
No fixed shape
Quite high density
Liquid heated , particles gain
EVEN MORE energy
Particles move around faster, no longer touching
Now a GAS
Can be compressed
No fixed shape
No fixed volume
Melting point - solid to liquid
Boiling point - liquid to gas
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