Cambridge IGCSE · Chemistry (0620)

Group VII properties: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Group VII properties.

10 questions27 marksFree, no account

Question 1

1 mark

What is the appearance of bromine at room temperature and pressure (r.t.p.)?

Question 2

1 mark

Which statement correctly describes the trend in properties of the Group VII halogens as the atomic number increases?

Question 3

1 mark

In Experiment 1, aqueous chlorine is added to aqueous potassium bromide.
In Experiment 2, aqueous bromine is added to aqueous potassium iodide.
Which row correctly identifies the final color of the solutions?

Question 4

1 mark

A student adds aqueous bromine to a solution of potassium iodide.
Which observation would be made?

Question 5

1 mark

Element X has a proton number of 85. Based on its position in the Periodic Table, which row correctly predicts the properties of element X?

Question 6

2 marks

State the appearance (physical state and color) of chlorine at room temperature and pressure.

Write your answer out first, then check it against the worked solution.

Question 7

4 marks

Predict the reactivity and physical state of astatine at room temperature based on the trends in Group VII.

Write your answer out first, then check it against the worked solution.

Question 8

5 marks

Explain why bromine can displace iodine from an aqueous solution of potassium iodide, referencing the reactivity of halogens.

Write your answer out first, then check it against the worked solution.

Question 9

4 marks

The halogens in Group VII show a trend in reactivity that can be demonstrated through displacement reactions.

(a) Describe the observations when aqueous chlorine is added to a solution of potassium iodide.
(b) Write the ionic equation for this reaction, including state symbols.
(c) Explain why no reaction occurs when aqueous bromine is added to a solution of potassium chloride.

Write your answer out first, then check it against the worked solution.

Question 10

7 marks

A student investigates the properties of three unknown halogens: X, Y, and Z. The following results were recorded:

1. X is a pale yellow-green gas at r.t.p.
2. Y is a red-brown liquid at r.t.p.
3. When aqueous X is added to a solution containing Z- ions, a grey-black solid is formed.

(a) Identify halogens X, Y, and Z.
(b) Arrange X, Y, and Z in order of increasing density.
(c) Explain the trend in reactivity for Group VII elements by referring to their atomic size and the ability to attract an incoming electron.

Write your answer out first, then check it against the worked solution.

* The content provided by thinka is generated by AI and may not always be accurate or up-to-date. Please use it as a supplementary resource and verify with official materials.

You've seen the model answer. Now get yours marked.

This page can show you how a good answer looks. It cannot tell you what your answer was missing. thinka marks your written work against the real mark scheme in about 15 seconds.

Get My Answers Marked Back to the notes

Want more questions like these? Get a fresh set on this topic, graded as you go.