What other mixtures in daily life could be separated using filtration and evaporation techniques? Give two examples and explain.
Answer (1)
Mixtures Separated by Filtration and Evaporation1. Filtration: Sand and Water MixtureExample: If you accidentally mix sand with water (like after washing vegetables), you can separate the sand from the water using filtration.How it Works: Pour the mixture through a coffee filter or fine cloth. The filter traps the sand (solid) while allowing the clean water (liquid) to pass through.Daily Use: This is also similar to the process of filtering coffee grounds from brewed coffee: the filter paper separates the solid coffee grounds from the liquid coffee.2. Evaporation: Saltwater SolutionExample: When salt is dissolved in water (as with seawater or after cleaning salted fish), the salt cannot be removed by filtration.How it Works: Leave the saltwater mixture in an open container and place it under the sun or apply gentle heat. The water will evaporate, leaving the crystallized salt behind.Daily Use: This is the traditional way of making table salt from seawater and can also be done at home to recover salt from used cooking water.
