IB Chemistry 2.4.3 Alloys Questions
IB Chemistry 2.4.3 Alloys Questions
Tackle alloy questions by explaining how mixed atomic sizes change layer sliding, strength and conductivity, and by distinguishing alloys from composites.
How this is tested
- explain why Al-Ni alloys are less malleable than Al: different-sized Ni atoms disrupt lattice layer sliding
- choose correct alloy facts: alloys are homogeneous mixtures, and C in Fe makes steel stronger than pure Fe
- distinguish alloys from composites: alloys include a metal and are homogeneous; composites have two phases