Class 10 Science - Chapter Metals and Non-Metals NCERT Solutions | Differentiate between metal and non-meta
Differentiate between metal and non-metal on the basis of their chemical properties.
| 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- |
More Questions From Class 10 Science - Chapter Metals and Non-Metals
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(ii) can be easily cut with a knife.
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(iv) is a poor conductor of heat. - Q:-
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Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
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You are given a hammer, a battery, a bulb, wires and a switch.
(a) How could you use them to distinguish between samples of metals and non-metals?
(b) Assess the usefulness of these tests in distinguishing between metals and non-metals. - Q:-
Food cans are coated with tin and not with zinc because
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(b) zinc has a higher melting point than tin.
(c) zinc is more reactive than tin.
(d) zinc is less reactive than tin. - Q:-
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
Metal Zinc Magnesium Copper Zinc oxide Magnesium oxide Cooper oxide In which cases will you find displacement reactions taking place?
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