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dissolving salt in water. the salt dissapears but if you evaporate the water,

salt will be remained.

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Answer #2:

The answer is that a substance never "disappears". It may become imperceptible

to your senses, or it may move to another place outside of the region that you

are monitoring, but no substance in any realm that you can observe ever passes

into "nothingness".

The semi-exception is the situation in which mass becomes energy, but even

then, although some mass has apparently "disappeared", some energy has

apparently "appeared" ex nihilo, and if you understand the mass/energy

equivalence, then you understand that even there, nothing has appeared

or disappeared.

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11y ago

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