You are worried that a solid substance has dissolved in a beaker of water and a lab what would be a way to separate the substance from the water? Would it be past the solution through a filter to let the dissolve substance separate or use a magnet to draw out the solid substance from the water or boil the water away, leaving the substance behind the beaker or pour the liquid along a rough surface that would catch the solid particles, but not the water.

Answer 1

To separate a solid substance that has dissolved in water, the appropriate method would typically be to boil the water away, leaving the solid substance behind in the beaker. This method relies on the difference in boiling points between water and the dissolved substance, allowing the water to evaporate while the solid remains.

Filtering the solution would not be effective because if the substance has dissolved, it is in molecular form and would pass through the filter along with the water.

Using a magnet would only work if the substance is magnetic, which is unlikely for a typical dissolved solid.

Pouring the liquid along a rough surface would not reliably separate a dissolved substance from water, as the dissolved particles are not suspended in a physical form that could be caught by the surface.

Overall, evaporating the water is the best method to separate the dissolved solid from the solution.