**Separation of Sand and Salt Mixture**
- **Physical Properties**
Sand and salt can be separated because they have different physical properties. Sand is made up of larger particles that are insoluble in water, while salt is made up of smaller particles that dissolve in water.
- **Dissolving the Mixture**
The first step in separating the sand and salt mixture is to add water to the mixture. By adding water, the salt will dissolve, leaving the sand behind.
- **Filtration**
After dissolving the salt in water, the next step is to filter the mixture. A filter paper or a sieve can be used to separate the sand from the saltwater solution. The sand will be caught in the filter paper or sieve, while the saltwater solution will pass through.
- **Evaporation**
The final step in separating the sand and salt mixture is to evaporate the water from the saltwater solution. This can be done by heating the solution in a container. As the water evaporates, salt crystals will start to form in the container.
- **Collection of Salt**
Once all the water has evaporated, the salt crystals can be collected from the container. The sand can be left behind as it does not dissolve in water.
By following these steps, the mixture of sand and salt can be effectively separated. This process utilizes the difference in physical properties of the two substances to achieve separation.