Separation Techniques

A _______ is a mixture of two or more different substances.

• Element

• Mixture

• Compound

• Pure substance

______ allows insoluble solids to settle to the bottom of the container before the liquid is carefully poured off the top.

• Filtration

• Precipitation

• Decantation

• Handpicking

________ separates the insoluble solids from a liquid in a mixture using a filter.

• Decantation

• Sifting

• Magnet attraction

• Filtration

________ separates the solid substances that have noticeable differences in sizes, shapes or colors.

• Sifting

• Handpicking

• Precipitation

• Decantation

_________ separates solids of different sizes.

• Handpicking

• Evaporation

• Sifting

• Decantation

What separation technique should we use to separate sand from dirty water?

• Magnet attraction

• Handpicking

• Filtration

• Centrifugation

How to separate a mixture of different nuts and beans?

• Sifting

• Handpicking

• Decantation

• Evaporation

Mina poured out the water from a bowl with a mixture of water and rice grains. What technique did she use?

• Handpicking

• Filtration

• Decantation

• Precipitation

Pooh separated the pebbles from the mixture of sand and pebbles using a sieve. What technique did he use?

• Sifting

• Sieving

• Both sieving and sifting are correct

• None of the choices

Ploy is planning to separate the mixture of flour and iron filings. What must she use?

• Wood

• Magnet

• Metal

• Water