Question

You are worried that a solid substance has dissolved in a beaker of water in a lab. What would be a way to separate the substance from the water?(1 point) Responses Pass the solution through a filter to let the dissolved substance separate. Pass the solution through a filter to let the dissolved substance separate. Pour the liquid along a rough surface that would catch the solid particles but not the water. Pour the liquid along a rough surface that would catch the solid particles but not the water. Use a magnet to draw out the solid substance from the water. Use a magnet to draw out the solid substance from the water. Boil the water away, leaving the substance behind in the beaker.

Answer 1

The best way to separate a solid substance that has dissolved in water is to **boil the water away, leaving the substance behind in the beaker**. This method works because it takes advantage of the fact that the solid substance, being dissolved, will remain after the water has evaporated.

The other options either misunderstand the nature of dissolution (a filter won’t separate a dissolved substance, as it is in solution) or would not effectively separate the solid from the liquid (such as using a magnet for a non-magnetic dissolved substance).