Question

The substance X normally exists in a physical state which can flow easily but does not fill its vessel
completely. It also turns anhydrous copper sulphate blue. When substance X is cooled excessively,
it changes into a substance Y which has a fixed shape as well as a fixed volume. If, however, the

substance X is heated strongly, it changes into a substance Z which has neither a fixed shape nor a fixed volume.

a) Name the substances i) X ii) Y and iii) Z.

b) What is the process of conversion of X into Z known as ?

c) At which temperature X gets converted into Y >

d) What is the process of conversion of X into Z known as ?

e) At which temperature X gets converted into Z ?



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Answer 1

Answer:

a) The substance X,Y and Z are water, ice and steam, respectively.

b) The process of conversion of X into Y is know as freezing.

c) At 0 degree X is converted into Y.

d) Boiling or Vaporisation is the name of the process of conversion of X to Z.

e) At 100 degree X get converted into Z.

Answer 2

Answer:

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