Question

question 2. a student has a mixture of sand and salt, whose properties are described in the table below. substance form at r.t.p. solubility boiling point magnetism salt solid powder soluble >1000°c not magnetic sand solid powder insoluble >1000°c not magnetic the student wants to separate the mixture to obtain the sand. she decides to add water to the mixture and then use filtration. part a. what will happen when the student adds water to the mixture? the salt will dissolve, but the sand will not. part b. when the student filters the mixture, what will happen? part c. can filtration be used to effectively separate the sand from the salt? the salt will be filtered out the sand will be filtered out both the salt and the sand will be filtered out neither the salt nor the sand will be filtered out

Explanation:

Step1: Recall filtration principle

Filtration separates insoluble solids from liquids.

Step2: Analyze salt - sand mixture

Salt is soluble in water, sand is insoluble. When water is added, salt dissolves and sand remains as solid.

Step3: Determine filtration result

When filtered, the insoluble sand will be retained on the filter paper while the salt - water solution (salt in dissolved state) will pass through.

Answer:

The sand will be filtered out