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A solid is a state of matter. Solids don't readily mix.
Particles never actually disappear.

You can lose them in fluid if they readily dissolve in that fluid. When dissolving, the particles may break up (ionize) and you could probably call that "disappearing". Some solids will absorb gas particles. For example, concrete can absorb oxygen molecules. But the oxygen is still there, it hasn't disappeared, just been absorbed.

Concrete is a mixture and oxygen can be absorbed by it so it would seem the answer is "yes". However, this is kind of skewing the original question a bit.

Short answer: No, particles never disappear.

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15y ago

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