CLASS 6 · LEARNING KNOWLEDGE
Diffusion and mixing – basics and applications
How it works
Diffusion is the independent, uniform distribution of particles of one substance in another substance without external influence. It is based on the constant, random motion of particles (Brownian motion). Diffusion occurs in gases, liquids and, more slowly, in solids. The speed of diffusion depends, among other things, on temperature, particle size and the state of matter. Mixing describes the result of this process: the uniform distribution of different substances.
Note
Diffusion is the independent movement of particles that leads to a uniform distribution of substances, with temperature and state of matter influencing the speed.
Diffusion is the independent movement of particles that leads to a uniform distribution of substances, with temperature and state of matter influencing the speed.
An example
What happens when a drop of ink is added to a glass of water without stirring?
The ink spreads through the water on its own after some time. That is diffusion: the ink particles move randomly and mix with the water particles until the colour is evenly distributed everywhere.
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.