Type Of Reactions 2 Snd Metals And Their Compounds Flashcards
State the chemical formula of rust
4Fe + 3o2 —2Fe2O3
State the 2 chemicals other than iron required for rusting
Oxygen and water
State the chemical test for oxygen
Relight glowing splint
What percentage of the air is oxygen?
21%
What 3 raw materials are added to the blast furnace?
Limestone, haematite and coke
How is iron extracted from the blast furnace?
Coke reacts with oxygen to release heat energy (carbon dioxide)
Carbon dioxide reacts with coke to form carbon monoxide.
Carbon monoxide reduces the iron oxide to form molten iron.
The limestone reacts with the sand to to produce slag( calcium silicate)
Coke reacts with oxygen to release heat energy.
Carbon dioxide reacts with coke to form carbon monoxide.
Carbon monoxide reduces the iron oxide to form molten iron.
The limestone reacts with sand to form slag ( carbon silicate)
C + O2 —- CO2
CO2 + 2C—-2CO
FE2O3+3CO — 3CO2 + 2FE
CaO + SiO2 — CaSiO3
What is slag used for?
To build roads
What is the main impurity found in iron ores?
Sand ( silicone dioxide )
What is the type of bonding in metals?
Metallic bonding
What does malleable mean?
It can be hammed into shape
What does ductile mean?
It can be stretched and drawn out into wires
Propoties of metal
High boiling point Malleable Shiny Strong Magnetic Conductor Sonorous High melting point Ductile Dense Solid
Why are metals malleable and ductile
The metal ions can easily slide over each other
Why are metals good conductors of heat and electricity
Because they have free delocalised electrons which can move so Cary electrical current or heat
