Filtration Techniques Flashcards
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What is the process of separating suspended solid matter from a liquid called?
Filtration
Filtration involves passing a liquid through a membrane to separate solids.
What are some examples of filtration?
- Making tea
- Mixture of sand and water filtered
These examples illustrate the practical application of filtration in everyday life.
What is evaporation?
A technique used to separate a solvent from a soluble solid by heating the solution until the solvent evaporates
Evaporation leaves solid residues behind.
Give examples of evaporation.
- Hot tea getting cold
- Wet clothes drying in the sun
- Evaporation of perspiration from the body
These processes demonstrate how evaporation occurs in different contexts.
What is crystallisation?
A method to obtain a very pure form of a solid dissolved in a liquid
Crystallisation can also occur naturally in geological processes.
Provide examples of crystallisation.
- Crystallization of water to form ice cubes and snow
- Crystallization of honey in a jar
- Formation of stalagmites and stalactites
- Deposition of gemstone crystals
These examples show crystallisation occurring in various scenarios.
What do we call the substances that make a mixture?
Constituents or components
These terms refer to the individual parts that combine to form a mixture.
Fill in the blank: _______ is a process to separate solids dissolved in liquids.
Evaporation or crystallisation
Fill in the blank: Mist is a _______ in gas mixture of droplets of water and air.
heterogeneous liquid
What method is used to separate clay from water?
Loading and decantation
This method allows the solid clay to settle before the clear liquid is removed.
Fill in the blank: When cereals are washed before cooking, water is separated from the cereals by _______.
decantation
Fill in the blank: _______ is a method used for the separation of an insoluble solid from a solid-liquid mixture.
Filtration
What are the solid particles that remain on the filter paper called?
Residue
What is the clear liquid that passes through the filter paper called?
Filtrate
Fill in the blank: The process of transferring the clear liquid layer above the solid particles is known as _______.
decantation
Which method gives the most pure substance after separation?
Crystallisation
Crystallisation allows for the purification of solids from solutions.
Which method can be used to separate ammonium chloride from common salt?
Sublimation
Sublimation is the transition of a substance from solid to gas without passing through the liquid phase.
