Grade 12 Chemistry: Separation Methods
This worksheet covers various separation methods used in chemistry, including distillation, chromatography, filtration, and decantation, suitable for Grade 12 students.
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Grade 12 Chemistry: Separation Methods
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Read each question carefully and answer to the best of your knowledge. Show all calculations where necessary.
1. Which separation technique is best suited for separating a mixture of sand and salt dissolved in water?
Distillation
Chromatography
Filtration followed by evaporation
Decantation
2. Fractional distillation is used to separate liquids with:
Significantly different boiling points
Similar boiling points
Different densities
Different solubilities
1. In chromatography, the component that travels further up the stationary phase has a higher for the mobile phase.
2. Decantation is a separation technique used to separate an insoluble solid from a liquid by carefully pouring off the .
1. Filtration is an effective method for separating dissolved solids from liquids.
True
False
2. Sublimation can be used to separate a mixture of iodine and sand.
True
False
1. Explain the principle behind solvent extraction and provide an example of its application.
2. Describe the main differences between simple distillation and fractional distillation.
Match each separation method with its primary principle of separation.
1. Distillation
a. Difference in particle size
2. Filtration
b. Difference in boiling points
3. Chromatography
c. Difference in densities
4. Decantation
d. Difference in affinity for stationary and mobile phases