1C June 2013 Flashcards
1
Q
One solid element is used in the extraction of iron and aluminium, what is it?
A
Carbon.
2
Q
What gaseous element takes part in a reaction needed in the extraction of iron.
A
Oxygen - production of heat.
3
Q
Why is cryolite used in the extraction of aluminium?
A
Acts as solvent for alumina.
4
Q
What is calcium silicate?
A
Slag.
5
Q
What is an isomer?
A
Same molecular formula, different displayed formula.
6
Q
Explain why aluminium is a good conductor of electricity.
A
Delocalised electrons flow through structure.
7
Q
Suggest why aluminium is ductile?
A
Layers and ions slide over each other.
8
Q
What is nitrogen?
A
A simple molecular structure.
9
Q
Gas -> solid?
A
Deposition.
