C1 3 Metals & their uses
Dr Barker 2011
Across
6. Alloy of iron containing small amounts (1-5 %) of other metals.
8. A reaction in which oxygen is removed (or electrons are gained).
10. The process of extraction of metals from ores using plants.
12. Heating a metal ore in order to extract its metal.
13. mixture of metals (and sometimes non-metals). For example, brass is a mixture
of copper and zinc.
14. When on element takes the place of another in a compound.
15. A shiny, corrosion-resistant metal used to make alloys.
16. The breakdown of a substance containing ions by electricity.
17. huge reaction vessels used in industry to extract iron from its ore.
18. Rock which contains enough metals to make it economically worthwhile to
extract the metal.
Down
1. These elements are from the central block of the periodic table. They have
typical metallic properties and form coloured compounds.
2. An alloy of iron with small amounts of carbon or other metals, such as nickel
and chromium, added.
3. Process of extraction of metals from ores using microorganisms.
4. Alloy of iron containing controlled, small amounts of carbon.
5. A low density, corrosion-resistant metal used in many alloys including those
used in the aircraft industry.
7. The impure iron taken directly from a blast furnace.
9. A chromium-nickel alloy of steel which does not rust.
11. Expensive alloy of iron mixed with relatively large proportions of other metals.
Dr Barker 2011
Word list for Crossword:
Alloy
Aluminium
Bioleaching
Blast furnace
Carbon steel
Cast iron
Displace
Electrolysis
High-alloy steel
Low-alloy steel
Ore
Phytomining
Reduction
Smelting
Stainless steel
Steel
Titanium
Transition metals
Dr Barker 2011