Identify which of these combinations of substances can be separated by filtration.

To identify which combinations of substances can be separated by filtration, it is essential to understand the principles behind the filtration process. Filtration is a mechanical or physical process used to separate solid particles from liquids or gases using a filter medium that allows the fluid to pass while retaining the solid particles.

Characteristics of Filtration:

1. Solid-Liquid Mixtures: Filtration is effective when separating solid particles from a liquid. For example, if you have a mixture of sand and water, the sand can be separated by passing the mixture through a filter paper.

2. Particle Size: The effectiveness of filtration depends significantly on the size of the particles. The filter medium must have pores small enough to retain the solid particles but large enough to allow the liquid to pass.

3. Homogeneity of the Mixture: Pure substances will not be effectively separated through filtration. If a mixture is a true solution (like sugar in water), filtration will not work because the solute particles are too small and will pass through the filter.

Conclusion:

To determine which combinations can be separated by filtration, look for instances where a solid is mixed with a liquid. For example, a combination of salt and water cannot be separated by filtration as salt dissolves in water, but sand and water can be effectively separated.