A-level CHEMISTRY 7405/1 ACTUAL
2025 PAPER MERGED WITH MARK
SCHEME
vincent marekia
[COMPANY NAME] [Company address]
, 1
Do not write outside the box
A-level
CHEMISTRY7405/1 ACTUAL 2025
PAPER MERGED WITH MARK
SCHEME
Paper 1 Inorganic and Physical Chemistry
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry
Tuesday 10 June 2025 Morning Time allowed: 2 hours
Turn over ►
IB/M/Jun25/7405/1
, 2
Do not write
outside the
box
Materials
For this paper you must have: For Examiner’s Use
• the Periodic Table/Data Booklet, provided as an insert (enclosed)
• a ruler with millimetre measurements
• a scientific calculator, which you are expected to use where appropriate. Question Mark
1
Instructions
• Use black ink or black ball-point pen. 2
• Fill in the boxes at the top of this page.
• Answer all questions. 3
• You must answer the questions in the spaces provided. Do not write outside the
box around each page or on blank pages. 4
• If you need extra space for your answer(s), use the lined pages at the end of
5
this book. Write the question number against your answer(s).
• All working must be shown.
6
• Do all rough work in this book. Cross through any work you do not
7
8
TOTAL
want to be marked.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 105.
*Jun257405101* IB/M/Jun25/G4007/V8
7405/1
Answer all questions in the spaces provided.
IB/M/Jun25/7405/1
, 3
Do not write outside the box
0 1 This question is about some Group 2 elements
and their compounds.
0 1
.1 Magnesium is reacted with titanium(IV) chloride to extract titanium metal.
Give the equation for this reaction.
State the role of magnesium in this reaction.
[2 marks]
Equation
0 1 Role of magnesium
.2 Complete Table 1 by giving the formula of a suitable calcium compound for each use.
[2 marks]
Table 1
Use Formula of calcium compound
Decrease acidity of soil
Remove SO2 from flue gases in power stations
0 1 .3 Magnesium hydroxide is used to relieve the symptoms of indigestion by
neutralising stomach acid.
Suggest why magnesium hydroxide is safer than sodium hydroxide as a treatment for
indigestion.
[1 mark]
Turn over ►
IB/M/Jun25/7405/1
2025 PAPER MERGED WITH MARK
SCHEME
vincent marekia
[COMPANY NAME] [Company address]
, 1
Do not write outside the box
A-level
CHEMISTRY7405/1 ACTUAL 2025
PAPER MERGED WITH MARK
SCHEME
Paper 1 Inorganic and Physical Chemistry
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry
Tuesday 10 June 2025 Morning Time allowed: 2 hours
Turn over ►
IB/M/Jun25/7405/1
, 2
Do not write
outside the
box
Materials
For this paper you must have: For Examiner’s Use
• the Periodic Table/Data Booklet, provided as an insert (enclosed)
• a ruler with millimetre measurements
• a scientific calculator, which you are expected to use where appropriate. Question Mark
1
Instructions
• Use black ink or black ball-point pen. 2
• Fill in the boxes at the top of this page.
• Answer all questions. 3
• You must answer the questions in the spaces provided. Do not write outside the
box around each page or on blank pages. 4
• If you need extra space for your answer(s), use the lined pages at the end of
5
this book. Write the question number against your answer(s).
• All working must be shown.
6
• Do all rough work in this book. Cross through any work you do not
7
8
TOTAL
want to be marked.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 105.
*Jun257405101* IB/M/Jun25/G4007/V8
7405/1
Answer all questions in the spaces provided.
IB/M/Jun25/7405/1
, 3
Do not write outside the box
0 1 This question is about some Group 2 elements
and their compounds.
0 1
.1 Magnesium is reacted with titanium(IV) chloride to extract titanium metal.
Give the equation for this reaction.
State the role of magnesium in this reaction.
[2 marks]
Equation
0 1 Role of magnesium
.2 Complete Table 1 by giving the formula of a suitable calcium compound for each use.
[2 marks]
Table 1
Use Formula of calcium compound
Decrease acidity of soil
Remove SO2 from flue gases in power stations
0 1 .3 Magnesium hydroxide is used to relieve the symptoms of indigestion by
neutralising stomach acid.
Suggest why magnesium hydroxide is safer than sodium hydroxide as a treatment for
indigestion.
[1 mark]
Turn over ►
IB/M/Jun25/7405/1
