A beaker contains a mixture of sand and salt a student adds water to dissovle the salt which processes can be used to separte out the sand and salt

Answer 1

To separate the sand and salt from a mixture after dissolving the salt in water, you can follow these steps:

1. Dissolution: Add water to the mixture to dissolve the salt. Stir the mixture to ensure that the salt completely dissolves in the water, while the sand remains undissolved.

2. Filtration: Use a filter paper or a sieve to separate the sand from the saltwater solution. Pour the mixture through the filter; the sand will be retained on the filter paper, while the saltwater solution will pass through as the filtrate.

3. Evaporation: To recover the salt from the saltwater solution, heat the filtrate gently to evaporate the water. As the water evaporates, the salt will crystallize out. You can heat the solution in a dish or use a hot plate, being careful to avoid overheating.

4. Collection: Once all the water has evaporated, collect the salt crystals left in the dish. The sand can also be collected from the filter paper.

After completing these steps, you will have separated the sand and salt effectively.