A chemist wants to separate a mixture of sand and muddy water. She uses a filter paper and a funnel to accomplish this. Based on the properties of suspensions, which statement is correct why this method is effective?
The particles in a suspension are large enough to be trapped by filter paper.
A suspension is a heterogeneous mixture in which the solid particles do not dissolve but remain spread through the liquid. These particles are relatively large and can often be seen with the naked eye.
Filter paper has very fine pores that let water molecules pass through but hold back larger solid particles. Since the sand and mud particles in a suspension are larger than these pores, they are trapped on the filter paper while clear water passes through the funnel into the vessel below.
Filtration is in fact the usual way to separate a suspension, so evaporation is not required. The particles of a suspension do not dissolve, otherwise they could not be filtered, and a magnet separates only magnetic substances such as iron, not every mixture.
Hence, The particles in a suspension are large enough to be trapped by filter paper.
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