Question on metals - year 11 (1 Viewer)

[pacman911]

The energy input necessary to extract a metal from its ore may be affected by several factors
i) The reactivity of the metal
ii) The density of the metal
iii) The magnetic property of the metal
iv) The chemical composition of the ore

Which factor(s) will have the greatest effect on the size of the energy input ?

A) (i),(ii), (iii) only
B) (i) and (ii) only
C) (i) and (iv) only
D) (i) only

Any help appreciated, please add reasoning where applicable.

 

[Ishynooshy]

My answer would have to be C.

The reactivity is going to affect the energy input because depending on how strongly the required metal is bonded to any other atom in the ore, is going to determine how much energy is needed to break those bonds to extract the metal.

Density and magnetism are physical properties, and will not be affected to any major extent by the application energy.

The chemical compostion of the ore is going to affect the energy input in a similar way to the reactivity of the metal. All the material that is NOT the required metal/not attached to the metal is very reactive, then a lot of energy is going to be needed to remove this filler, before being able to the extract the metal.

Hope that helps

 

[thongetsu]

Yah i say C.

 

[pacman911]

Thank you very much