Dsicuss amphoteric nature of water with an example.

is an example of:

What are amphoteric substances? Illustrates with an example.

a. The reaction of metal E with ferric oxide is hightly exothermic. Metal E is obtained from its oxides by electrolytic reduction. Identify metal E and write its reaction with ferric oxide. b. Give a reason to justify that aliminium is an amphoteric oxide. Also give another example of an amphoteric oxide.

Water can evaporate at any temperature Explain with an example? (AS_3)

What are amphoteric substances? Give examples.

A metal 'X' which is used in thermite process, when heated with oxygen gives an oxide 'Y' which is amphoteric in nature. Identify X and Y. Write down balanced chemical equations of the reactions of oxide Y with HCl and NaOH.

What are amphoteric oxides ? Give examples.

The nature's cleaners are

Define water of crystallisation with two examples. How will you prove their existence in the examples given by you ?