true or false 8.Metals react with oxygen to produce basic oxides.
Answers
Answer- The above question is from the chapter 'Metals and Non-metals'.
Given question: State true or false:- Metals react with oxygen to produce basic oxides.
Answer: True.
Explanation:-
Let's take an example of a metal: Magnesium (Mg).
Method:
1) Take a magnesium ribbon of about 3-4 cm and hold it with a pair of tongs and burn it using a bunsen burner.
2) Use an eye protection.
3) Collect the white ash so formed in a watch glass.
4) Now, add the ash in the water.
5) Take a red and blue litmus paper and try testing them.
Observations:
1) When Mg ribbon is burned, a dazzling white flame is produced along with the evolution of heat.
2) The ash formed is actually Magnesium oxide (MgO).
3) On adding MgO in water, Magnesium hydroxide [Mg(OH)₂] is formed.
4) On testing Mg(OH)₂ with red litmus paper, red litmus turns into blue. This shows its basic nature.
5) On testing Mg(OH)₂ with blue litmus paper, no change is seen.
Conclusion:
Thus, this activity shows how to check the basic nature of metal oxides.
Equations:
1) Mg + O₂ ------> 2MgO
2) MgO + H₂O --------> Mg(OH)₂
Answer:
it is true
Explanation:
metals produce basic oxide with oxygen