the characteristics of matter that are demonstrated by diffusion are : 
1. matter is made up of or consists of tiny particles which can be even more divide but under certain circumstances. 
2. particles of the matter i.e. liquids and gases move always. 
3.the rate of diffusion is greater in the gases, in liquids is is medium and in solids it is very much less.
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Matter is made up of particles. These particles have spaces between them. Liquids n gases are fluids ie they are moving always. The rate of diffusion is highest in gases n lowest in solids.
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