Methods of seperation Flashcards
(21 cards)
What is the process of separating a solid from a liquid by allowing the solid to settle and then pouring off the liquid called?
Sedimentation
True or False: Filtration can be used to separate a soluble solid from a liquid.
False
What method would you use to separate a mixture of sand and salt?
Dissolve the salt in water, then filter the mixture.
Fill in the blank: The technique of separating substances based on their boiling points is known as __________.
Distillation
What is the primary principle behind chromatography?
Separation based on different affinities of substances to a stationary phase and a mobile phase.
True or False: Evaporation can be used to separate a soluble solid from a liquid.
True
What is the process of separating a mixture by passing it through a porous material called?
Filtration
Which separation technique is used for separating colored substances in a mixture?
Chromatography
Fill in the blank: __________ is a method used to separate two liquids with different boiling points.
Fractional distillation
True or False: Magnetic separation can be used to separate mixtures containing iron.
True
What is decantation?
The process of carefully pouring off a liquid to leave behind solids.
Which technique would you use to separate a mixture of oil and water?
Decantation or using a separatory funnel.
What principle does the method of crystallization rely on?
The difference in solubility of substances at different temperatures.
Fill in the blank: The technique that uses temperature changes to separate components in a mixture is called __________.
Thermal separation
True or False: Sieving is an effective method for separating a mixture of liquids.
False
What is the primary use of the evaporation method?
To separate a soluble solid from a liquid by removing the liquid.
Which separation method would be most appropriate for separating a mixture of salt and sugar?
Dissolve in water and then use crystallization to separate.
What is the role of the stationary phase in chromatography?
To provide a medium for separation based on different affinities.
Fill in the blank: The technique of __________ is commonly used in laboratories to separate and purify liquids.
Distillation
What is a common application of sublimation in separation processes?
Separating iodine from sand.
True or False: All mixtures can be separated by physical methods.
True
