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Diamond is an extremely strong and rigid substance because of its molecular structure, which is giant covalent structure. This means that every carbon is covalently bonded to 4 other carbon molecules to f...

This answer would usually be marked out of 25, therefore should include:

Detailed introduction which explores examples of deflation in modern world economies and sets a brief insight as to the cont...

An unsaturated hydrocarbon is a molecule containing only hydrogen and carbon with a carbon carbon double bond in the molecule.

3x² + 2x + 4

Reflection: a wave hits a surface, and bounces back into the medium it was originaly in

Refraction: a wave enters a medium with a different refractive index to the original medium it was travelling...