Metals & extraction

What is phytomining?
The extraction of metals from low grade ores using plants. Plant roots absorb metals in the soil, the plants are then burnt to produce a metal rich ash. The metal is then separated from the ash.
1 of 9
Define ALLOY
An alloy is a metal of 2 elements, 1 of which is an element.
2 of 9
List 3 properties of a transition metal.
Form coloured compounds, have high melting points and high density
3 of 9
What is an ore?
A metal oxide found in the earths crust which is economical to extract
4 of 9
How are particles in a metal arranged?
In a lattice
5 of 9
What is the difference between the atoms in a metal and those of an alloy?
Alloy has different atoms, this distorts the lattice and changes the properties of the metal. In a metal, the atoms are the same and arranged in a lattice.
6 of 9
Describe 1 positive and 1 negative impact of quarrying iron ore.
Positive- creates jobs Negative- Can create air pollution
7 of 9
Complete the sentence. Iron is extracted from its ore by...
REDUCTION
8 of 9
What is a displacement reaction?
When a more reactive metal replaces a less reactive metal from a solution of one if it's salts.
9 of 9

Other cards in this set

Card 2

Front

Define ALLOY

Back

An alloy is a metal of 2 elements, 1 of which is an element.

Card 3

Front

List 3 properties of a transition metal.

Back

Preview of the front of card 3

Card 4

Front

What is an ore?

Back

Preview of the front of card 4

Card 5

Front

How are particles in a metal arranged?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Extracting metals /The reactivity series resources »