Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
F
GCSE
COMBINED SCIENCE: TRILOGY
Foundation Tier
Chemistry Paper 2F
Time
Your text allowed:
here 1 1 hour 15 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator
1
• the periodic table (enclosed).
2
Instructions 3
• Use black ink or black ball-point pen.
4
• Pencil should only be used for drawing.
• Fill in the boxes at the top of this page. 5
• Answer all questions in the spaces provided. 6
• If you need extra space for your answer(s), use the lined pages at the end of 7
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 TOTAL
marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 70.
• 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.
*jun218464c2F01*
IB/M/Jun21/E6 8464/C/2F
, 2
Do not write
outside the
0 1 Fresh water contains low levels of dissolved salts. box
Water reacts with anhydrous copper sulfate in a reversible reaction.
The word equation for the reaction is:
water + anhydrous copper sulfate ⇌ hydrated copper sulfate
0 1 . 1 How does the equation show that the reaction is reversible?
[1 mark]
0 1 . 2 Complete the sentences.
Choose answers from the box.
[2 marks]
blue green orange white yellow
The colour of anhydrous copper sulfate is .
The colour of hydrated copper sulfate is .
*02*
IB/M/Jun21/8464/C/2F
, 3
Do not write
outside the
0 1 . 3 Figure 1 shows anhydrous copper sulfate in a sealed container. box
Figure 1
Suggest one reason why anhydrous copper sulfate is kept in a sealed container.
[1 mark]
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun21/8464/C/2F
, 4
Do not write
outside the
Sodium chloride dissolves in water to form sodium chloride solution. box
0 1 . 4 Draw one line from each substance to the description of the substance.
[2 marks]
Substance Description of substance
Compound
Sodium chloride solution
Element
Hydrocarbon
Water
Mixture
0 1 . 5 Name the process used to obtain solid sodium chloride from
sodium chloride solution.
[1 mark]
*04*
IB/M/Jun21/8464/C/2F
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
F
GCSE
COMBINED SCIENCE: TRILOGY
Foundation Tier
Chemistry Paper 2F
Time
Your text allowed:
here 1 1 hour 15 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator
1
• the periodic table (enclosed).
2
Instructions 3
• Use black ink or black ball-point pen.
4
• Pencil should only be used for drawing.
• Fill in the boxes at the top of this page. 5
• Answer all questions in the spaces provided. 6
• If you need extra space for your answer(s), use the lined pages at the end of 7
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 TOTAL
marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 70.
• 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.
*jun218464c2F01*
IB/M/Jun21/E6 8464/C/2F
, 2
Do not write
outside the
0 1 Fresh water contains low levels of dissolved salts. box
Water reacts with anhydrous copper sulfate in a reversible reaction.
The word equation for the reaction is:
water + anhydrous copper sulfate ⇌ hydrated copper sulfate
0 1 . 1 How does the equation show that the reaction is reversible?
[1 mark]
0 1 . 2 Complete the sentences.
Choose answers from the box.
[2 marks]
blue green orange white yellow
The colour of anhydrous copper sulfate is .
The colour of hydrated copper sulfate is .
*02*
IB/M/Jun21/8464/C/2F
, 3
Do not write
outside the
0 1 . 3 Figure 1 shows anhydrous copper sulfate in a sealed container. box
Figure 1
Suggest one reason why anhydrous copper sulfate is kept in a sealed container.
[1 mark]
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun21/8464/C/2F
, 4
Do not write
outside the
Sodium chloride dissolves in water to form sodium chloride solution. box
0 1 . 4 Draw one line from each substance to the description of the substance.
[2 marks]
Substance Description of substance
Compound
Sodium chloride solution
Element
Hydrocarbon
Water
Mixture
0 1 . 5 Name the process used to obtain solid sodium chloride from
sodium chloride solution.
[1 mark]
*04*
IB/M/Jun21/8464/C/2F
