A pipeline operator records the boiling points of two hydrocarbons being considered for storage.
| Hydrocarbon | Boiling point |
|---|---|
| R | 42 °C |
| S | 198 °C |
Which conclusion about the molecules follows from these measurements?
The boiling points do not indicate which molecules are larger.
The molecules in S are larger than the molecules in R.
The molecules in R are larger than the molecules in S.
The molecules in R and S are the same size.
91 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.