Question

Chalk,ironnail,wood, aluminium,candle,cotton usually look different from each other. Give some properties by which we can prove that these materials are different.

Answer 1

Heya...Empress Here...

These all can be differentiated on the basis of their :-

HARDNESS
SONORITY
DENSITY
THEIR MELTING/BURNING POINTS
THEIR CAPACITY TO CONDUCT ELECTRICITY AS WELL ^^
:)

Answer 2

Properties may be

METALS/NON METALS
M.P
CONDUCTIVITY OF ELECTRICITY
HARDNESS
DENSITY
SONORITY
AND CHEMICAL REACTIONS