C1 Metals

HideShow resource information
What are the four main ores needed to be known at GCSE?
Iron, copper, aluminium and titanium
1 of 31
What kind of metals are found in their native state in the ground?
Unreactive metals (eg/ gold)
2 of 31
Where are most metals most commonly found?
In ores reacted with other elements
3 of 31
Give an equation for an ore.
Iron + Oxygen --> Iron oxide
4 of 31
What are ores?
Rocks with enough metal/compound. Economical to extract
5 of 31
What is iron used for?
To make steel (eg/ for skyscrapers)
6 of 31
What is copper good for?
Making wires (excellent conductor)
7 of 31
What is aluminium used for?
Making aircraft frames (low density/mass)
8 of 31
What is titanium good for?
Medical implants (strong and unreactive)
9 of 31
What is the common way of extracting iron?
A displacement reaction
10 of 31
How does a displacement reaction work?
React iron oxide w/ more reactive element=>removes oxygen
11 of 31
What element do we often displace with and why?
Carbon because it's very cheap
12 of 31
What don't we use to extract iron?
More expensive metals
13 of 31
Give the word equation for a reduction reaction.
Iron(iii)oxide + carbon (+heat)--> Iron + carbon dioxide
14 of 31
Give the symbol eqn.
2FE2O3 + 3C (+heat)--> 4Fe +3CO2
15 of 31
Where does the reaction take place?
In a blast furnace
16 of 31
Why is the cast iron from a blast furnace not so good?
Contains impurites (eg/ carbon) => iron becomes brittle
17 of 31
How do we get rid of the impurities?
Get rid of carbon->blow O2 to iron-> remove C as CO2
18 of 31
Pure iron is too soft to be useful. Why?
Atoms in layers (regular)=> can slide over each other
19 of 31
What are alloys?
Metals combined with another element, often a different metal
20 of 31
Why are alloys therefore harder than pure metals?
Different sized atoms=>irregular=>layers can't slide=>harder
21 of 31
What is steel?
An alloy of iron with carbon
22 of 31
What does low-carbon steel contain? Properties and what it is good for?
Low carbon=>easily shaped, used for car bodies
23 of 31
Why is high-carbon steel very hard? Useful for?
Lots of C atoms, irregular, prevents sliding (eg/ railway lines, bridges)
24 of 31
What are the properties of stainless steel? Uses?
Alloy of C and Cr and Ni. Corrosion resistant, (eg/ cutlery, containers)
25 of 31
What is copper used for?
Making wires
26 of 31
What are copper's properties?
Good conductor heat and electricity. No reaction with water
27 of 31
How do we extract copper? Is it pure?
Use a smelter to produce impure copper.
28 of 31
What are the problems with copper ores and extraction? Therefore what must we do?
They are running out. We must find alternative sources.
29 of 31
What is phytomining?
Soil has SMALL amount of copper. Plants absorb it.
30 of 31
How do we retrieve the copper?
Burn the plants and get the copper from the ash
31 of 31

Other cards in this set

Card 2


What kind of metals are found in their native state in the ground?


Unreactive metals (eg/ gold)

Card 3


Where are most metals most commonly found?


Preview of the front of card 3

Card 4


Give an equation for an ore.


Preview of the front of card 4

Card 5


What are ores?


Preview of the front of card 5
View more cards


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Metals, metal ores and alloys resources »