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Differentiate between the chemical properties of metal and non metals..
Give 5 points..
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Answers
First of all what is metal and non-metal?
=> Which have tendency to loose electrons are known as Metals and which have tendency to gain or receive electrons are known as Non-metals.
Example : Na, K, Mg etc. are metals and C, Pb etc. are Non-metals.
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Chemical Properties of Metals :
→ All metals are solid. But there are some exceptions too in metals i.e. Gallium, Mercury are liquid metals.
→ Metals are good conductor of heat and electricity.
Expect : lead.
→ They are lustrous (shining) and can be polished again and again.
Example : Gold.
→ They can display hydrogen gas from dilute acid.
Example : 2Na + 2HCl → 2NaCl + H2.
→ They react with oxygen to produce basic oxides.
Example : 4Na + O2 → 2Na2O
→ They are malleable and ductile.
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Chemical Properties of Non- Metals :
→ Non-metals exist in all states i.e. solid, liquid and gas.
→ They are bad conductor of heat and electricity.
Except : Graphite.
→ They are non- lustrous and can't be polished again and again.
→ They don't displace hydrogen gas from dilute acid.
→ They react with oxygen to produce acidic oxides.
Example : C + O2 → CO2
→ They are neither malleable nor ductile.
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