On Titan, the largest moon of Saturn, methane (CH4\text{CH}_4CH4) exists in liquid form in lakes due to the extremely low surface temperatures. On Earth, at standard atmospheric pressure, methane boils at −161.5 ∘C-161.5\ ^\circ\text{C}−161.5 ∘C.
Explain, in terms of intermolecular forces, why methane has a very low boiling point.
59 exam-style questions on Edexcel GCSE Chemistry 2.5 Types of substance, covering 2.5.1 Classifying substances by structure and bonding, 2.5.2 Properties of ionic and simple molecular substances, 2.5.3 Giant covalent structures: diamond and graphite, 2.5.4 Fullerenes, graphene and simple polymers, 2.5.5 Properties of metals and non-metals, and 2.5.6 Limitations of bonding models and representations. Each one has a worked solution and a mark scheme showing where the marks go.