Titanium is extracted from titanium chloride by reacting it with sodium at a very high temperature. This industrial process is carried out in an atmosphere of argon gas rather than in air.
Which property of argon makes it suitable for this use?
Argon has a low boiling point
Argon is unreactive
Argon is less dense than air
Argon is a diatomic gas
44 exam-style questions on Edexcel GCSE Chemistry 7.3 Group 0, covering 7.3.1 The noble gases. Each one has a worked solution and a mark scheme showing where the marks go.