a

H

Wednesday 10 June 2020 Morning Time allowed: 1 hour 45 minutes

Materials

For this paper you must have:

 a ruler

 a scientific calculator

 the periodic table (enclosed).

Instructions

 Use black ink or black ball-point pen.

 Pencil should only be used for drawing.

 Fill in the boxes at the top of this page.

 Answer all questions in the spaces provided. Do not write outside

the box around each page or on blank pages.

 If you need extra space for your answer(s), use the lined pages at the end

of this book. Write the question number against your answer(s).

 Do all rough work in this book. Cross through any work you do not want

to be marked.

 In all calculations, show clearly how you work out your answer.

Information

 The maximum mark for this paper is 100.

 The marks for questions are shown in brackets.

 You are expected to use a calculator where appropriate.

 You are reminded of the need for good English and clear presentation

in your answers.

*jun20 4622H01* IB/M/Jun20/E12 8462/2H

Please write clearly in block capitals.

Centre number Candidate number

Surname

Forename(s)

Candidate signature

I declare this is my own work.

GCSE

CHEMISTR

Y

Higher Tier Paper 2

For Examiner’s Use

Question Mark

1

2

3

4

5

6

7

8

9

10

TOTAL

 1 / 4

2

Do not

write

outside the

box

*02*

IB/M/Jun20/8462/2H

1

2

0 1 This question is about chemical analysis.

A student tested copper sulfate solution and calcium iodide solution using flame tests.

This is the method used.

1. Dip a metal wire in copper sulfate solution.

2. Put the metal wire in a blue Bunsen burner flame.

3. Record the flame colour produced.

4. Repeat steps 1 to 3 using the same metal wire but using calcium iodide solution.

. What flame colour is produced by copper sulfate solution?

[1 mark]

. Calcium compounds produce an orange-red flame colour.

The student left out an important step before reusing the metal wire.

The student’s method did not produce a distinct orange-red flame colour using

calcium iodide solution.

Explain why.

[2 marks]

0 1

0 1

 2 / 4

3

Do not

write

outside the

*03*

IB/M/Jun20/8462/2H

4

box

. To test for sulfate ions the student added dilute hydrochloric acid to

copper sulfate solution.

Name the solution that would show the presence of sulfate ions when added

to this mixture.

[1 mark]

0 1

. 5 To test for iodide ions the student added dilute nitric acid to calcium iodide solution.

Name the solution that would show the presence of iodide ions when added

to this mixture.

Give the result of the test.

[2 marks]

Solution

Result

Turn over ►

0 1

0 1 . 3 The student added sodium hydroxide solution to:

 copper sulfate solution

 calcium iodide solution.

Give the results of the tests.

[2 marks]

Copper sulfate solution

Calcium iodide solution

8

 3 / 4

4

Do not

write

outside the

*04*

IB/M/Jun20/8462/2H

1

2

This question is about water. box

. In

the UK,

potable

(drinking)

water is

produced

from

different

sources of

fresh

water.

Expl

ain

how

pota

ble

wate

r is

prod

uce

d

from

fres

h

wate

r.

[4 marks]

. A

different

country

has:

 ve

0 2

0 2

0 2

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