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Group 7 (halogens) – chlorine, bromine and iodine

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Question 4

The halogens are elements in Group 7 of the Periodic Table.

a.

Select the correct answer for each of the following:

At room temperature and pressure, the physical state of bromine is

  • A solid
  • B liquid
  • C gas
  • D aqueous solution
[1]
b.

Chlorine gas is

  • A pale green
  • B red-brown
  • C grey-black
  • D colourless
[1]
c.

Which of the elements fluorine, chlorine, bromine, and iodine is the most reactive?

[1]
d.

Chlorine reacts with hydrogen to form a colourless gas that dissolves in water to form an acid.

What is the name of the colourless gas?

[1]
e.

What is the name of the acid?

[1]
f.

What is the formula that is used to represent both the colourless gas and the acid?

[1]

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

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