Question

Q31. Aluminium, copper, iron and magnesium metal samples are collected and heated over a flame.
(i) Which metal burns easily and what is the colour of the flame?
(ii) Which of the products obtained on heating form alkali? Give reaction.
(iii) When dilute acid is added to the metal samples separately, which one reacts most vigorously and
which one does not react? Explain on what basis you can conclude that.

Answer 1

Answer:

1. The metal which burns easily is Aluminium and becomes red hot very easily and the colour of the aluminium completely changes to red in colour

2. The magnesium gives alkali (ashes)

3. magnesium gives the different reaction with the acids while compared with all of the other metals the reason is that the magnesium has different properties rather then the other metals the other metals are solid and have high durability but the magnesium has various properties and is not a perfect solid too