Ores

1
Ores

• Where do metals come from?

2
Metals
3
Metals
Earths crust
4
The Structure of the Earth
5
Metals come from rocks which are mixed in with
the Earths crust. Most metals are found as metal
ores. An ore is a rock which contains a
substantial amount of a metal compound. Some
metals (which ones?) are found uncombined in
nature, this is because they are unreactive.
They are known as native metals.
For example Gold and Silver.
Haematite Iron ore mostly made of iron oxide
Bauxite Aluminium ore mostly made of aluminium
oxide
Malachite Copper ore
6
Why Are Some Metals Found Pure?

• Watch the demonstration and put the metals in
  order of reactivity
• Some metals are very unreactive so dont join
  with any other atoms
• They are known as native metals
• Gold and Silver are native metals

7
Your task.

• Look at page 80/81 of the textbooks. Answer the
  questions in the text. Then the questions at the
  bottom of page 81
• Answer the past exam questions about ores. You
  can write on the sheets.