How do metallic and ionic substances differ in conducting electricity ?

Substances which don't conduct electric current

Identify the following substance : A gas which does not conduct electricity in the liquid state but conducts electricity when dissolved in water.

Explain the following: (a) Sodium chloride is an ionic compound which does not conduct electricity in solid state whereas it does conduct electricity in molten state as well as in aqueous solution. (b) Reactivity of aluminium decrease if it is dipped in nitric acid. (c) Metals like calcium and magnesium are never found in their free state in nature.

Which of following will not conduct electricity?

This non-metal has an allotropic form which conducts electricity :

Give four differences between metals and nonmetals theirp Conductivity of heat and electricity,

When ionic compounds are dissolved in water, they conduct electricity. Explain .

Give reason why? Sugar solutions do not conduct electricity.

How do monocots and dicots differ in the venation of leaves?

A non-metal X exists in two different forms Y and Z. Y is hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.