IB DP DT Topic 4.2a Metals

Iron is extracted from a metal ore, mostly commonly found as ...

• Haematite and Magnetite

• Ferrotite and Magnetite

• Haematite and Bauxite

• Ferrotite and Bauxite

What is used to make steel?

• Bauxite, coke and soda

• Iron, coke and limestone

• Bauxite, soda and limestone

• Iron, coke and bauxite

To make Aluminium, it requires an expensive process to extract the Aliminium, known as ...

• Pyrolytic process

• Smelting

• Electrolytic process

• Thermolytic process

The atoms in metals arrange themselves into a regular pattern known as ...

• chromatic structure

• lattice structure

• herculean structure

• pinnacle structure

Close packed hexagonal structures result in metals that are...

• strong and tense

• hard and tough

• very ductile and good conductors

• weak and poor strength

Face centred cubic structures in metals means that metals are ...

• strong and tough

• strong and tense

• very ductile and good conductors

• weak and poor strength

Body centred cubic structures in metals means that metals are ...

• strong and tense

• hard and tough

• very ductile and good conductors

• weak and poor strength

Metal crystals become dendrites and these form grains. What determines the size of the metals grains?

• Cooling speed from molten metal

• Atomic size of dendrites

• Addition of other elements

• Cubic structure of metals

Which list of methods is correct for controlling the grain size of metals?

• Tempering, Annealing, Formalising, Hardening

• Hardening, Annealing, Temperature, Satirising

• Normalising, Annealing, Tempering, Hardening

• Formalising, Akneeling, Tempering, Hardening

A metal that has been Hardened has a small grain structure.

• True

• False