SELECT * FROM question_mgmt as q WHERE id=3568 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=16 AND chapterId=254 and ex_no='6' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th science Metals and Non-Metals differentiate between metal and non metal on the b

Question:

Differentiate between metal and non-metal on the basis of their chemical properties.

Answer:

Metal Non-Metal
Metals are electropositive. Non-metals are electronegative.

They react with oxygen to form basic oxides.

4Na + O2  →  2Na2O

These have ionic bonds.

They react with oxygen to form acidic or neutral oxides.

C + O2 → CO2

These have covalent bonds.

They react with water to form oxides and hydroxides. Some metals react with cold water, some with hot water, and some with steam.

2Na + 2H2O → 2NaOH + H2 ↑

 They do not react with water.

They react with dilute acids to form a salt and evolve hydrogen gas. However, Cu, Ag, Au, Pt, Hg do not react.

2Na + 2HCl → 2NaCl + H2 ↑

 They do not react with dilute acids. These are not capable of replacing hydrogen.

They react with the salt solution of metals. Depending on their reactivity, displacement reaction can occur.

CuSO4 + Zn  →  ZnSO4 + Cu

These react with the salt solution of non-metals.

They act as reducing agents (as they can easily lose electrons).

Na  →  Na+ + e-

These act as oxidising agents (as they can gain electrons).

Cl2 + 2e-  →  2Cl-

 


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