Metals Flashcards
1
Q
Transition metals can be hammered or…
A
bent into useful shapes.
2
Q
The strength of transition metals makes them useful…
A
building materials.
3
Q
Copper
A
- can be bent but still hard enough for plumbers to use
- it does not react with water
- conduct electricity and heat very well
4
Q
Uses of copper
A
- pipes that will carry water
- wires that will conduct electricity
5
Q
Copper alloy
A
- brass
- bronze
6
Q
Bronze
A
- Made by mixing copper with tin
- Used to make ship’s propellers, since it is tough and resistant to corrosion
7
Q
Brass
A
- copper and zinc
- much harder than copper
- can be pressed into complex shapes
- used to make musical instruments such as trumpets
8
Q
Aluminium
A
- low density for metal
- over 300 alloys of aluminium
- light-weight but strong
- to build aircraft
- other as an armour plating on tanks
9
Q
Gold alloys
A
- gold is alloyed with copper to make jewellery
- pure gold wears away more easily
- changing the proportion of two metals, different shades can be made
10
Q
Copper, aluminium and gold are alloyed with other metals to…
A
make them harder.
11
Q
Why can metals be shaped?
A
The layers of atoms in metals are able to slide over each other.
12
Q
Iron is extracted using
A
blast furnace.
13
Q
Oxidation
A
Is a gain of oxygen.
14
Q
Reduction
A
Is a loss of oxygen.
15
Q
Impurities in iron are from…
A
carbon and it makes the iron brittle, however, still hard.
