Separation by Sublimation and Filtration
Sublimation separates a sublimable solid from non-sublimable impurities, while filtration separates an insoluble solid from a liquid using a filter.
Practice This ConceptMain explanation
Teacher explanation
The correct separation method depends on the properties of the components. If one solid changes directly into vapour on heating, sublimation can separate it. If an insoluble solid is mixed with a liquid, filtration can remove the solid residue from the liquid filtrate.
Example
Ammonium chloride can be separated from sand by sublimation, while sand can be separated from water by filtration.
Simple analogy
Filter stops insoluble particles; sublimation lifts sublimable solids as vapour.
Common confusion
Students often write filtration for any mixture without checking whether the solid is dissolved or insoluble.
Exam tip
First identify whether the component is sublimable, soluble, or insoluble; then choose the method.
Study the separation by sublimation and filtration diagram carefully
Use the labelled diagram to keep separation by sublimation and filtration clear in short answers and revision.
What this diagram makes clear
This diagram keeps the labels and direction of separation by sublimation and filtration in the right order.
Where this helps in exams
Use this for labelled diagram work and short exam answers on separation by sublimation and filtration.
Revision cue
Revise separation by sublimation and filtration through the labels before writing the answer.
Answer writing and exam use
1-mark use
Write the exact meaning of separation by sublimation and filtration in one clean line.
2-mark use
Define separation by sublimation and filtration and add one example or condition.
3-mark use
Explain separation by sublimation and filtration, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
Open the concept quiz intro first, review the test details, and then start a focused MCQ set from this concept only. Instant score and answer review are live now.
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