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Group 7 (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Group 7' from the broader topic Atomic Structure And The Periodic Table. The test is geared towards the AQA exam board style syllabus.
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Why do boiling and melting points of halogens increase down the group?
A student bubbles chlorine through an aqueous solution containing potassium iodide. Which colour change indicates iodine has been produced?
Which halogen would you expect to be least soluble in water as a molecular halogen (X2)?
What happens to the oxidising power of the halogens as you go down Group 7?
Which statement correctly explains why halogens typically form single covalent bonds in diatomic molecules like Cl2?
Which property of halogens makes them good oxidising agents?
Which of the following is the correct trend for boiling points going down Group 7?
Which test and result indicate the presence of chloride ions in a solution?
Which halogen is a brown liquid at room temperature?
Which observation would you expect when solid sodium is added to chlorine gas?
Which halogen is purple/black as a solid and gives a violet vapour when heated?