If you want to get a liquid coffee to drink in the morning. What is the best technique to separate the ground coffee from the hot water?
Filtration
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15
Evaporation is aย techniqueย used to separate dissolved solids from a ...........
liquid-solid mixture.
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15
This is a technique used to separate small amounts of substances from mixtures based on the different solubilities of the components in a particular solvent.
Paper chromatography.
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15
To separate iron from salt . What is the bestย techniqueย can we apply?
magnetic attraction.
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eraser
Reset score!
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fairy
Take points!
5
10
15
20
25
shark
Other team loses 20 points!
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banana
Go to last place!
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15
ย Inย filtration and in evaporation , the ______ represents theย solid particles left after applying the techniques.
residue
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seesaw
Swap points!
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shark
Other team loses 25 points!
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rocket
Go to first place!
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baam
Lose 25 points!
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monster
Reset all scores!
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star
Double points!
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gift
Win 25 points!
Okay!
lifesaver
Give 10 points!
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15
Provide two examples in which paper chromatography could be applied.
Identifying food coloring, to identify illegal drugs at the airport, to identify dyes used in ink.
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15
True or false:ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย ย The technique used to separate a mixture depends on the physical properties of substances that made up a mixture, and also from the substance that will be obtained.
True
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15
This method allows to obtain a pure liquid from a solid-liquid or liquid-liquid mixture, also it is very common to use some laboratory apparatus to carry out it. What is the technique?
Distillation
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15
Complete this idea: ___________ is not able to separate the components of a solution, but the ___________ should be able to pass through pores in a ___________. (solution, filter, filtration)
Filtration-solution- filter
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15
if you want to find out the different kinds of dyes that made up different inks. What technique will be useful to this process?
Paper chromatography.
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15
If you want to obtain common salt for seasoning some dishes; the best technique to apply is __________ ,because it is neccesary to heat the seawater to leave the salt behind.
Evaporation
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15
Magnetic attraction is used to separate non-magnetic materials from...
magentic materials.
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15
What are the two main processes involved in distillation technique?