Question

Account for the following: 

(a) The size of weather balloon becomes larger and larger as it ascends up into higher altitudes. 

(b) Copper is malleable and ductile whiles sulphur is not.

Answer 1

(a) At higher altitudes, atmospheric pressure decreases, therefore, air inside the weather balloon exerts pressure and its size becomes larger and larger as it ascends higher and higher. 

(b) Copper is metal and has strong metallic bond, that is why it is malleable and ductile. Sulphur is non-metal and has weak intermolecular force of attraction therefore it is brittle.