The Total solution for NCERT class 6-12
Answer - 31 : -
Metals
Non-metals
When metals are heated with oxygen, they form ionic oxides which are basic in nature and form bases on dissolving with water. This turn red litmus paper to blue.
When non-Metals are heated with oxygen, they form covalent oxides which are acidic in nature which form acid on dissolving with water. This turn blue litmus paper to red.
They are electro positive, lose electrons readily and become a positive ion.
They are electro negative, gain electrons and become negative ions.
Metals are lustrous.
Non-metals are non-lustrous; graphite is the exception
Reducing agents.
Good oxidizing agents.
Metals are the good conductors of electricity and heat.
Non-metals are non-conductors of electricity and heat; graphite is the exception
All metals are solids except mercury.
Non-metals are in solid-liquid and gaseous states