Question

a beaker contains a mixture of sand and salt

Answer 1

To separate a mixture of sand and salt, you can follow these steps:

### Materials Needed:
- Beaker containing the sand and salt mixture
- Water
- Stirring rod or spoon
- Filter paper or a coffee filter
- Funnel
- Another clean beaker or container for the filtered solution

### Procedure:
1. **Dissolve the Salt:**
- Add water to the beaker with the sand and salt mixture. You will need enough water to dissolve all the salt.
- Stir the mixture well using a stirring rod or spoon until you are sure that all the salt has dissolved. The sand will not dissolve.

2. **Filter the Mixture:**
- Place a funnel over another clean beaker or container.
- Put filter paper or a coffee filter into the funnel.
- Slowly pour the sand-salt-water mixture through the filter. The water (containing dissolved salt) will pass through the filter, while the sand will remain on the filter paper.

3. **Collect the Filtrate:**
- The liquid that passes through the filter is called the filtrate and contains the dissolved salt in water.

4. **Recover the Salt:**
- To recover the salt from the water, you can heat the filtrate to evaporate the water. This can be done using a heat source or by leaving it in an open dish at room temperature until all the water has evaporated.

5. **Dry the Sand:**
- The sand left on the filter paper can be collected and dried if necessary.

### Summary:
Through this method, you successfully separate the salt from the sand by dissolving the salt in water and then filtering out the sand. The salt can be obtained by evaporating the water from the salt solution.