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Group 7 (halogens) – chlorine, bromine and iodine

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Question 3

Fluorine, chlorine, and bromine are elements in Group 7 of the Periodic Table.

a.

Identify which of fluorine, chlorine, and bromine has:

  • the darkest colour
  • the lowest boiling point
[2]
b.

Give the name of another Group 7 element that is a solid at room temperature.

[1]
c.

When hydrogen and bromine react together, hydrogen bromide gas forms. Write a chemical equation for this reaction.

[1]
d.

Some hydrogen bromide gas is bubbled into separate samples of water and hexane. A piece of blue litmus paper is dipped into each solution. State, with a reason, the final colour of the litmus paper in the solution in water.

[2]
e.

State, with a reason, the final colour of the litmus paper in the solution in hexane.

[2]

Group 7 (halogens) – chlorine, bromine and iodine Questions

  1. IGCSE
  2. /Chemistry
  3. /Group 7 (halogens) – chlorine, bromine and iodine