Which process occurs at the cathode during the process of electrolysis?

How can metals be differentiated from non-metals on the basis of any three chemical properties?

Write the electron dot structures of magnesium and chlorine and show the formation of magnesium chloride by the transfer of electrons.

Which metal catches fire when kept exposed to air?

$(a)$ What type of ores are calcined? Illustrate by giving a suitable example.
$(b)$ In what form is the calcined ore obtained,and how can it be reduced? Give chemical equations of the reduction process involved for the example provided by you.
$(c)$ Name two metals used as reducing agents by displacing metals of lower reactivity from their compounds.

What is the main component of natural gas?