Lesson 3 Flashcards
In preparing coffee using the Barako coffee
beans, you may pour the boiled coffee mixture
into a piece of cloth. Which method is being
illustrated?
Filtration
In a laboratory setting, you have a mixture of
different colored pigments. Which technique
would you likely use to separate these pigments
for analysis?
Chromatography
When separating a mixture of sand, salt, and
water, what sequence of techniques could be
applied to obtain the pure salt?
Filtration, Evaporation, Decantation
When considering the separation of a mixture
through distillation, what property of the
components is essential for the process to be
effective?
Boiling point
Suggest a separation method to be done on the
following mixture to separate its components.
Perfume
Cartridge ink
Crude oil
Rock salt and cornstarch
Saltwater and sand
Perfume – Use distillation
Cartridge ink – Use chromatography.
Crude oil – Use fractional distillation
Rock salt and cornstarch – Use dissolution and filtration
Saltwater and sand – Use filtration and evaporation.
o In this process, a solution is heated until it boils.
o Once it boils, the liquid solvent starts to
evaporate and leave behind the solid solutes.
Evaporation
can be used to separate
solutions.
Recrystallization
refers to the amount of substance
that can be dissolved in a given solvent at a
certain temperature.
Solubility
used to separate
components of liquid
solutions
distillation
setup
separates
components of a solution based
on differences in boiling points
between the two liquid
components.
Distillation
Types of Distillation
Simple distillation
Fractional distillation
Vacuum distillation
Steam distillation
is used when there is a large difference in the
boiling points of the components of the solution
Simple distillation
is used when there is a relatively small
difference in the boiling points of the components of the solution.
Fractional distillation
is used for compounds with very high boiling
points.
Vacuum distillation
is used for compounds that are heat-sensitive.
Steam distillation