Learn practical techniques for separating mixtures, like filtration, sieving, and evaporation.
Filtration separates insoluble solids from liquids. Sieving separates particles of different sizes. Evaporation separates a dissolved solid from a liquid.
How would you separate tea leaves from brewed tea?
Filtration, using a strainer
How would you separate stones from rice grains?
Hand-picking or sieving, based on size difference
We separate mixtures in daily life to purify substances, remove unwanted materials, or recover useful components.
Why do we filter water before drinking it?
To remove dirt, sediment, and impurities, making it safer to drink
How could you recover salt from salt water?
By evaporation — heating the water until it evaporates, leaving the salt behind
1. What method would separate sand from water?
2. What method would separate husk from wheat grains?
3. What method would recover salt from salt water?
4. What method separates particles by size using a mesh?
5. Why is it useful to separate mixtures in daily life?