Rock salt is a mixture of salt and sand.
The method used to separate the sand from the salt is listed.
step 1: Crush the rock salt, add to warm water and stir.
step 2: Pour the mixture through a filter paper held in a funnel.
step 3: Evaporate the water to crystallise the salt.
Which statement about the method is correct?
1 )
The filtrate in step 2 is pure water.
2 )
The residue in step 2 is pure crystals of salt.
The solute is salt.
4 )
The solvent is a mixture of salt and water.
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