Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Monday 22 January 2024
Afternoon (Time: 1 hour 20 minutes) Paper
reference WCH13/01
Chemistry
International Advanced Level
UNIT 3: Practical Skills in Chemistry I
You must have: Total Marks
Scientific calculator, ruler
Instructions
•• Use black ink or ball-point pen.
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
• Show all your working in calculations and include units where appropriate.
Information
•• The total mark for this paper is 50.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• You will be assessed on your ability to organise and present information, ideas,
descriptions and arguments clearly and logically, including your use of grammar,
punctuation and spelling.
• A Periodic Table is printed on the back cover of this paper.
Advice
•• Read each question carefully before you start to answer it.
Show all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end. Turn over
P75593A
©2024 Pearson Education Ltd.
S:1/1/1/
*P75593A0120*
, Answer ALL the questions. Write your answers in the spaces provided.
1 This question is about the hormone testosterone, the structure of which is shown.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Functional group 3
OH
O
Functional group 1 Functional group 2
(a) Give the name of each of the three circled functional groups.
(3)
Functional group 1
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Functional group 2
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Functional group 3
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
2
*P75593A0220*
, (b) Describe a chemical test and the expected positive result for both functional
group 2 and functional group 3.
(4)
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Functional group 2
Test
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Result
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Functional group 3
Test
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Result
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
3
*P75593A0320* Turn over
, (c) In a mass spectrometer, the molecular ion formed can break apart into smaller
fragments. One way the molecular ion can fragment is shown by the dashed line.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
OH
+
O
(i) Deduce the m/z ratio of the fragment shown by the unshaded area, assuming
it forms a singly charged ion.
(1)
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
(ii) When molecular ions fragment, they form a smaller ion and another type
of particle.
State the other type of particle formed.
(1)
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
(Total for Question 1 = 9 marks)
4
*P75593A0420*
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Monday 22 January 2024
Afternoon (Time: 1 hour 20 minutes) Paper
reference WCH13/01
Chemistry
International Advanced Level
UNIT 3: Practical Skills in Chemistry I
You must have: Total Marks
Scientific calculator, ruler
Instructions
•• Use black ink or ball-point pen.
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
• Show all your working in calculations and include units where appropriate.
Information
•• The total mark for this paper is 50.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• You will be assessed on your ability to organise and present information, ideas,
descriptions and arguments clearly and logically, including your use of grammar,
punctuation and spelling.
• A Periodic Table is printed on the back cover of this paper.
Advice
•• Read each question carefully before you start to answer it.
Show all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end. Turn over
P75593A
©2024 Pearson Education Ltd.
S:1/1/1/
*P75593A0120*
, Answer ALL the questions. Write your answers in the spaces provided.
1 This question is about the hormone testosterone, the structure of which is shown.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Functional group 3
OH
O
Functional group 1 Functional group 2
(a) Give the name of each of the three circled functional groups.
(3)
Functional group 1
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Functional group 2
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Functional group 3
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
2
*P75593A0220*
, (b) Describe a chemical test and the expected positive result for both functional
group 2 and functional group 3.
(4)
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Functional group 2
Test
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Result
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Functional group 3
Test
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
Result
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
3
*P75593A0320* Turn over
, (c) In a mass spectrometer, the molecular ion formed can break apart into smaller
fragments. One way the molecular ion can fragment is shown by the dashed line.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
OH
+
O
(i) Deduce the m/z ratio of the fragment shown by the unshaded area, assuming
it forms a singly charged ion.
(1)
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
(ii) When molecular ions fragment, they form a smaller ion and another type
of particle.
State the other type of particle formed.
(1)
. . . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............... ........... ................................................................................................................................. . . . . . . . . . . . . . . . . . . . .
(Total for Question 1 = 9 marks)
4
*P75593A0420*
