Matter Part 2

Which separation technique is used to separate liquids from solids when the solid particles have settled at the bottom?

• Evaporation

• Filtering

• Decantation

• Sieving

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What happens to dissolved solid substances when a liquid containing them is evaporated?

• They turn into vapor with the liquid.

• They remain behind as solids.

• They dissolve further into the air.

• They become part of the new liquid formed.

What is the primary function of a filter paper or mesh in the filtering process?

• To dissolve solid particles.

• To heat the mixture.

• To trap solid particles while allowing liquid to pass through.

• To increase the density of the liquid.

How does sieving separate solid particles from a mixture?

• By attracting magnetic particles.

• By turning liquid into vapor.

• By allowing smaller particles to fall through a mesh while larger ones remain.

• By carefully pouring off the liquid from settled solids.