Question 5
FA student uses the apparatus in the figure to break down liquid paraffin, which contains long chain alkanes.
Figure: The apparatus used by the student
a.[1]
Name the process taking place in the boiling tube.
b.[1]
Give the purpose of the broken pottery.
c.[1]
The student shakes the gas collected with bromine water. The bromine water changes from orange to colourless. What does this result show about the gas?
d.[1]
Suggest why the student must lift the delivery tube out of the water before turning off the Bunsen burner.
e.[1]
Give one reason why cracking is important to the oil industry.
7.1 Carbon compounds as fuels and feedstock Questions
40 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.