Chemistry - 0620 / 61 Paper 6 - Alternative to Practical Question Paper - October / November 2024 IGCSE - Cambridge International Examination. Examination Question Paper + Mark Scheme + Data Sheet

* 0000800000001 *



,










,




Cambridge IGCSE™

¬OŠ. 4mHuOªEŠ]{5€W
¬LtN ªthvˆ/ªAx“m‚
¥uUU55eUe u Ue5•U
*7218503662*




CHEMISTRY 0620/61
Paper 6 Alternative to Practical October/November 2024

1 hour

You must answer on the question paper.

No additional materials are needed.

INSTRUCTIONS
● Answer all questions.
● Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
● Write your name, centre number and candidate number in the boxes at the top of the page.
● Write your answer to each question in the space provided.
● Do not use an erasable pen or correction fluid.
● Do not write on any bar codes.
● You may use a calculator.
● You should show all your working and use appropriate units.


INFORMATION
● The total mark for this paper is 40.
● The number of marks for each question or part question is shown in brackets [ ].
● Notes for use in qualitative analysis are provided in the question paper.




This document has 16 pages. Any blank pages are indicated.


IB24 11_0620_61/4RP
© UCLES 2024 [Turn over

, * 0000800000002 *




DO NOT WRITE IN THIS MARGIN
2
,










,

1 A student has a mixture of copper(II) carbonate powder and crystals of sodium sulfate.
Copper(II) carbonate is insoluble in water. Sodium sulfate is soluble in water.

The student tries to obtain pure copper(II) carbonate and crystals of pure sodium sulfate from the
mixture. Fig. 1.1 shows four of the steps the student carries out.

step 1 step 2
Add distilled water to Filter the mixture.
the mixture and stir.
residue




DO NOT WRITE IN THIS MARGIN
filtrate




step 3 step 4
Heat the filtrate from step 2 Leave the residue on the filter paper
until crystals start to form. from step 2 in a warm place to dry.




DO NOT WRITE IN THIS MARGIN
residue



heat filter paper



Fig. 1.1

(a) State what happens to the sodium sulfate in step 1.

.............................................................................................................................................. [1]




DO NOT WRITE IN THIS MARGIN
(b) State what is removed from the filtrate in step 3.

.............................................................................................................................................. [1]


(c) Describe what must be done after the filtrate has been heated in step 3 to obtain a larger
amount of sodium sulfate crystals.

....................................................................................................................................................

.............................................................................................................................................. [1]
DO NOT WRITE IN THIS MARGIN




ĬÍĊ®Ġ´íÈõÏĪÅĊàù·þ×
ĬÿÊóÏĬĞĖÏċòÔÒ»ÈëõĂ
© UCLES 2024 ĥåÅÕõÕĥµĕÅåÅąĕÅõµÕ 0620/61/O/N/24

, * 0000800000003 *
DO NOT WRITE IN THIS MARGIN



3
,










,

(d) (i) State what must be done to the residue before it is allowed to dry in step 4 to obtain pure
copper(II) carbonate.

.............................................................................................................................................

....................................................................................................................................... [1]

(ii) Identify the substance removed from the copper(II) carbonate in (d)(i).

....................................................................................................................................... [1]
DO NOT WRITE IN THIS MARGIN




[Total: 5]
DO NOT WRITE IN THIS MARGIN
DO NOT WRITE IN THIS MARGIN
DO NOT WRITE IN THIS MARGIN




ĬÏĊ®Ġ´íÈõÏĪÅĊàû·þ×

© UCLES 2024
ĬÿÉô×ĞĢĦêíÿĕĆÃĔëąĂ
ĥåµĕµµąÕąµõÅąõåµåÕ 0620/61/O/N/24 [Turn over