precipitate is the answer
The answer would be C.
The salt and the water have both undergone physical changes.
Hope this helps!
As the volume of a gas increases <em>at constant temperature</em>, the number of particle impacts per unit area decreases.
There is the same number of impacts, but they are spread over a larger surface area.
Thus, the number of impacts per unit area decreases.
Answer:
It's true :) Hope that helps
