Give an activity to show the process of sublimation
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Answered by
15
follow my steps.
1) take a camphor or naphthalene ball
2) keep it a place for undisturbed for some day.
_______
observation
you observe that camphor & naphthalene get evaporated in Atmosphere.
1) take a camphor or naphthalene ball
2) keep it a place for undisturbed for some day.
_______
observation
you observe that camphor & naphthalene get evaporated in Atmosphere.
Answered by
19
Take some camphor or ammonium chloride.
· Crush the compound taken and put it in a china dish
· Put an inverted funnel over the china dish
· Put a cotton plug on the stem of the funnel
· Heat the china dish slowly and observe.
Ammonium chloride is the molecule which on heating changes directly into gaseous state. When vapours of Ammonium chloride collected then solid Ammonium chloride is formed.
NH4Cl(Solid) ⟺ NH4Cl (vapour)
Observation: A change of state directly from solid to gas without changing into liquid state (or vice versa) is observed, this phenomenon is called sublimation.
· Crush the compound taken and put it in a china dish
· Put an inverted funnel over the china dish
· Put a cotton plug on the stem of the funnel
· Heat the china dish slowly and observe.
Ammonium chloride is the molecule which on heating changes directly into gaseous state. When vapours of Ammonium chloride collected then solid Ammonium chloride is formed.
NH4Cl(Solid) ⟺ NH4Cl (vapour)
Observation: A change of state directly from solid to gas without changing into liquid state (or vice versa) is observed, this phenomenon is called sublimation.
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