ʙᴀꜱᴇᴅ ᴏɴ ᴛʜᴇ ᴩʜyꜱɪᴄᴀʟ ᴀɴᴅ ᴄʜᴇᴍɪᴄᴀʟ ᴩʀᴏᴩᴇʀᴛɪᴇꜱ ᴅɪꜰꜰᴇʀᴇɴᴛɪᴀᴛᴇ ʙᴇᴛᴡᴇᴇɴ ᴍᴇᴛᴀʟ ᴀɴᴅ ɴᴏɴ-ᴍᴇᴛᴀʟ.
Answers
★ Difference between Metal and non metal on the basis of physical properties :
- Metals are good conductors of heat and electricity.
- Metals are ductile and malleable.
- Metals are lustrous (shiny) in nature.
- Metals are strong.
- Non metals are bad conductor of heat and electricity.
- Non metals are not strong.
- Non metals are non lustrous.
- Non metals are not ductile and malleable.
★ Difference between metals and non metals on the basis of Chemical properties :-
- Metals are electropositive.
- Metals reacts with water to form hydroxide and hydrogen.
- Metals reacts with oxygen to form basic oxides.
- Non metals are electronegative.
- Non metals don't reacts with water.
- Non-metals react with oxygen to form acidic oxide.
☆Physics properties of metal
i) Malleability
Metal can be hammered into thin sheet
ii) Ductility
Metal can be drawn into thin wire
iii) Lustrous
Metal have Shining appearance
iv) Sonorous
Metal produces ringing sound
v) Metal are good conductor of heat and electricity
vi) Metal have high density
Vii) meta have high melting point and boiling point
viii) Generally metal are found in solid state
exp:- Mercury found in liquid in room temperature
ix) Metal have densile strength that is maintain shape and size
Physical properties of non metal
i) Malleability
Non-Metal can't be hammered into thin sheet
ii) Ductility
Non- Metal can't be drawn into thin wire
iii) Lustrous
Non- Metal have not Shining appearance
iv) Sonorous
Non- Metal donot produces ringing sound
v) Non-Metal are not good conductor of heat and electricity
vi) Non- Metal have Low density
Vii) Non-meta have low melting point and boiling point
viii) Generally Non -metal are found in solid , liquid and gas state
exp:- Mercury found in liquid in room temperature
ix)Non- Metal donot have densile strength that is maintain shape and size
Chemical properties of metal
i)Reaction with oxygen
When metal reacts with oxygen to form metal oxide
Different metal React with oxygen under different conditions
Some metal like Na,K , Li donot kept in air because it catches fire immediately
Metal like Al , Zn , Mg when react with oxygen form a protective layer which further oxidation
ii) Reaction with water
Different metal react with water under different conditions
Sodium, potassium, lithium React with cold water and form metal hydroxide and release hydrogen gas
This reaction is highly Exothermic so that the amount of heat produced on it can burn the Hydrogen
=> 2Na + 2H₂0 ⇨ 2NaoH + H₂
When calcium react with water at room temperature to form calcium hydroxide to release hydrogen gas
This Reaction is also Exothermic reaction but the amount of heat is not so sufficient that it can burn hydrogen
so the bubbles of hydrogen stick with clacium due to which calcium start folw on the surface of water
Ca + 2H₂0 ⇨ Ca (OH)₂ + H₂
When Mg reacts with hot water it form magnesium hydroxide and release hydrogen gas
it also start floating on the surface of water
Mg + 2H₂0⇨ Mg(OH)₂ + H₂
Metal react with acid
when metal react with acid if form salt and release hydrogen gas
2HCL + Zn ⇨ ZnCl₂ + H₂
Chemical properties of Non-metals
Reaction of non-metals with oxygen:
Non-metals form respective oxide when react with oxygen.
Non-metal + Oxygen ⇨ Non-metal oxide
When carbon reacts with oxygen, carbon dioxide is formed along with production of heat.
C + O2 ⇨ CO2 + Heat
When carbon is burnt in insufficient supply of air, it forms carbon monoxide. Carbon monoxide is a toxic substance. Inhaling of carbon monoxide may prove fatal.
2C + O2 ⇨ 2CO + Heat
Sulphur gives sulphur dioxide when react with oxygen. Sulphur caught fire when exposed to air.
S + O2 ⇨ SO2
When hydrogen reacts with oxygen it gives water.
2H2 + O2 ⇨ 2H2O