Science

2. A naturally occurring solid material from which a metal or valuable mineral can be extracted profitably
3. A smelting furnace in the form of a tower into which a blast of hot compressed air can be introduced from below. Such furnaces are used chiefly to make iron from a mixture of iron ore, coke, and limestone
5. An inorganic, non-metallic, often crystalline oxide, nitride or carbide material that is hard, corrosion-resistant and brittle
7. A chemical reaction in which a more reactive element displaces a less reactive element from its compound
9. A table of the chemical elements
10. A chemical reaction that involves the gaining of electrons by one of the atoms involved in the reaction
11. A region around a magnetic material or a moving electric charge within which the force of magnetism acts

1. A substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together, e.g. many synthetic organic materials used as plastics and resins
2. The loss of electrons during a reaction by a molecule, atom or ion
4. A process in which a chemical change is brought about by passing an electric current through a solution of electrolytes
6. A substance whose atoms all have the same number of protons
8. A soft metal core made into a magnet by the passage of electric current through a coil surrounding it