Question

Q1.ThesubstanceXnormalyexistsinaphysicalstatewhichcanfloweasilybutdoesnotfilits vessel completely.Italsoturnsanhydrouscoppersulphateblue.WhensubstanceXiscooled excessively,itchangesintoasubstanceYwhichhasafixedshapeaswelasafixedvolume.If however,thesubstanceXisheatedstrongly,itchangesintoasubstanceZwhichhasneitherafixed shapenorafixedvolume.
(a)Namethesubstances(i)X(i)Yand(i)Z. (b)WhatistheprocessofconversionofXintoYknownas? (c)AtwhichtemperatureXgetsconvertedintoY? (d)WhatistheprocessofconversionofXintoZknownas? (e)AtwhichtemperatureXgetsconvertedintoZ?

Answer 1

Whats your question??

Answer 2

X - Water

Y - Ice

Z - Water Vapour.

(b) Crystallisation

(c) At 0 degree Celsius

(d) Sublimation

(e) At 100 degree Celsius.