Paper 2 - Extraction And Uses of Metals Flashcards
What are the uses of steel in terms of its properties?
- Car shells, cutlery and intricately shaped things
Because - Very strong
- Low carbon steel is malleable
What are the 3 types of steel?
- Low carbon
- High carbon
- Stainless
What are the uses of iron in terms of its properties?
- Constructing
- Piping
Because - Malleable
- Strong
What is an alloy?
A mixture of a metal and 1 more other elements (such as carbon) that are NOT chemically bonded
How are most metals extracted?
They are extracted from ores found in the earth’s crust
What are the uses of copper in terms of its properties?
-Wires
Because
- Ductile
- Resistant to corrosion
- Electrically conductive
How does the method of extraction relate to the position of the metal in the reactivity series?
Give 2 examples of metals and how they are extracted
- If a metal is less reactive than carbon, then it is reduced with carbon
- E.g. Iron
- If a metal is more reactive than carbon, then it is extracted using electrolysis
- E.g. Aluminium
Explain flexibility
Bends without breaking
What are the uses of aluminium in terms of its properties?
- Drinks can
Because - Low density
- Malleable
What is meant by ductile?
Can be drawn into wires
How are unreactive metals found?
Give 2 examples
- They are found in their natural state as an uncombined element
- Silver and Gold
What is reduction in terms of oxygen?
When oxygen is lost
How can metals be arranged in a reactivity series based on their displacement reactions between metal and metal oxides?
- Metals higher in the reactivity series can displace metals lower in the series from their compounds
- E.g. Zn + CuO –> Cu + ZnO
What is oxidation in terms of oxygen?
When oxygen is gained
Why are alloys stronger than pure metals?
The different sized atoms in allows prevent the layers from sliding over each other
