Actual 2025 AQA A-LEVEL CHEMISTRY Paper 1 Inorganic and Physical Chemistry.
WORKED EXAM SOLUTIONS. Mark Scheme ATTACHED.
Tuesday 10 June 2025 [VERIFIED]
, 2
Do not write
outside the
Answer all questions in the spaces provided. 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
Role of magnesium
0 1 . 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]
tyrionpapers.com for more resources
IB/M/Jun25/7405/1
, 3
Do not write
outside the
An ionic compound of a Group 2 element dissolves in water to form solution X. box
Separate samples of solution X are tested to identify the ions.
Table 2 shows the observations.
Table 2
Reagent added Observation
Test 1 NaOH(aq) White precipitate
Test 2 HNO3(aq) and AgNO3(aq) Cream precipitate
4 Identify the Group 2 cation in solution X.
0 1 .
Give an ionic equation for the reaction that occurs in Test 1.
[2 marks]
Group 2 cation
Ionic equation
Question 1 continues on the next page
tyrionpapers.com for more resources
IB/M/Jun25/7405/1
, 4
Do not write
outside the
Turn over ►
tyrionpapers.com for more resources
IB/M/Jun25/7405/1
WORKED EXAM SOLUTIONS. Mark Scheme ATTACHED.
Tuesday 10 June 2025 [VERIFIED]
, 2
Do not write
outside the
Answer all questions in the spaces provided. 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
Role of magnesium
0 1 . 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]
tyrionpapers.com for more resources
IB/M/Jun25/7405/1
, 3
Do not write
outside the
An ionic compound of a Group 2 element dissolves in water to form solution X. box
Separate samples of solution X are tested to identify the ions.
Table 2 shows the observations.
Table 2
Reagent added Observation
Test 1 NaOH(aq) White precipitate
Test 2 HNO3(aq) and AgNO3(aq) Cream precipitate
4 Identify the Group 2 cation in solution X.
0 1 .
Give an ionic equation for the reaction that occurs in Test 1.
[2 marks]
Group 2 cation
Ionic equation
Question 1 continues on the next page
tyrionpapers.com for more resources
IB/M/Jun25/7405/1
, 4
Do not write
outside the
Turn over ►
tyrionpapers.com for more resources
IB/M/Jun25/7405/1
