Metals Flashcards
How are metals oxidised?
Chemical reactions (iron, titanium, copper) Electrolysis (aluminium)
What is Iron made in?
A blast furnace
What is iron made from?
Haematite, iron ore, iron (III) oxide
What is the formula for iron oxide?
Fe2O3
What are metals?
Elements that are extracted from their ores, often oxides
What makes cast iron from the furnace hard but brittle?
Impurities
What happens when impurities are removed?
Makes wrought iron, which has atoms arranged in a regular lattice and is soft and easy to shape
What happens when metals and carbon are added to pure iron?
It distorts the lattice and makes different type of steel (an alloy of iron), which is hard and rigid
What is extracted by electrolysis from bauxite, aluminium oxide?
Aluminium
What is the formula for aluminium oxide?
Al2O3
What are the properties of aluminium?
It has a low density and is soft
It forms strong, low density alloys with other metals
What type of metals are titanium and copper?
Transition metals
Where are transition metals found on the periodic table?
In the central block
What are properties of transition metals?
Hard and strong
Good conductors of heat and electricity
Can be drawn into wires and hammered into sheets
What can be deformed but return to their original shape when heated?
Smart alloys
