Rocks and Metals

Name a metal that is found in its native state.
Gold / Silver
Reactivity series
A list of metals in order of their reactivity
metal oxides
Metals combined with oxygen
PbO
Lead oxide
MgO
Magnesium oxide
CuO
Copper oxide
What element do we use to reduce a metal oxide ?
Carbon
Al
Aluminium
Symbol for iron
Fe
Symbol for Calcium
Ca
Na
Sodium
K
Potassium
ZnO
Zinc oxide
Fe2O3
Iron oxide
CO
Carbon monoxide
Haematite
Iron ore / Iron oxide and sand
Coke
Made from coal and is almost pur carbon
A metal that contains other metals
alloy
Steel
Alloys which contain iron and carbon / alloy of iron and other elements
Low alloy steels
Contain between 1% and 5% of other metals
Name a metal that might be found in a low alloy steel
Chromium titanium, tungsten, manganese, vanadium,
High-alloy steels
A steel that contains between 12% and 15% of other metals
Name a metal that might be found in a high alloy steel.
Nickel, chromium
Will high alloy steels rust ?
No
Bronze
Copper and tin, may have a small amount of phosphorous for bearings with low friction
Brass
Copper and zinc alloy
Smart alloys
Alloys which can change their shape whathen when heated but will return to their original shape
shape memory alloys
Alloys which can be deformed and then will return to their original shape on heating.
Give a use for a smart alloy
Holding broken bones in place / dental braces
Transition metals
Found in the centre of the periodic table. eg Copper
Malleable
Can bebent into shape
Give 3 properties of transition metals
They are strong.
Heat can pass through them.
Electricity can pass through them.
Smelting
When we heat a metal up to a very high temperature.
What new way is being used to extract copper from ores
Using Bacteria or fungi on low grade ores
Give two properties of Aluminium and titanium
Light and Strong
Name the layer that will form on the outer surface of aluminium
Aluminium oxide
Name a use for titanium
repalacement hip joint, inside a nuclear reactor
How is aluminium extracted from its ore ?
By electrolysis
Phytomining
The extraction of metals using plants.

Get access to
knowledge base

MOney Back
Guarantee
No Hidden
Charges
Unlimited
Knowledge base
Become a Member