At a water treatment works, chlorine is added to drinking water to kill bacteria.
Describe the test for chlorine gas. Give the result of the test.
Chlorine gas is toxic. Give one safety precaution a student should take when using chlorine in the laboratory.
Hot sodium burns in chlorine gas to form a white solid. Name the white solid.
Write the word equation for the reaction of magnesium with chlorine.
Chlorine reacts with hydrogen to form hydrogen chloride gas. Hydrogen chloride dissolves in water.
Name the solution formed when hydrogen chloride dissolves in water.
Give the pH of this solution. Choose from: 1, 7, 14
41 exam-style questions on Edexcel GCSE Chemistry 7.2 Group 7, covering 7.2.1 Physical properties of the halogens, 7.2.2 Reactions of the halogens, 7.2.3 Relative reactivity and displacement reactions of the halogens, and 7.2.4 Halogen displacement as a redox reaction. Each one has a worked solution and a mark scheme showing where the marks go.