AQA GCSE Combined Science: Trilogy | Chemistry | Topic 4: Chemical Changes | Foundation Tier
AQA GCSE COMBINED SCIENCE: TRILOGY
CHEMISTRY
Topic 4: Chemical Changes
Foundation Tier | Paper 1
THIS RESOURCE INCLUDES:
Complete Lecture Notes with Diagrams
Worksheet Exercises + Full Answer Key
2023 and 2024 Past Paper Questions
Complete Mark Schemes
Created by: Sanjita Mumi
Name: _______________________________ Class: ______________ Date: ____________
Created by Sanjita Mumi | For Educational Use Only Page 1
,AQA GCSE Combined Science: Trilogy | Chemistry | Topic 4: Chemical Changes | Foundation Tier
TABLE OF CONTENTS
Section Topic Page
1 Learning Objectives 3
2 The Reactivity Series 3
3 Metal Reactions with Water and Acids 4
4 Displacement Reactions 5
5 Extraction of Metals 5
6 pH Scale, Acids and Alkalis 6
7 Neutralisation Reactions 7
8 Making Soluble Salts (Required Practical) 8
9 Electrolysis 9
10 Worksheet Exercises 11
11 Worksheet Answer Key 12
12 2023 Past Paper Questions — Chemical Changes 13
13 2024 Past Paper Questions — Chemical Changes 14
14 Past Paper Mark Schemes (2023 and 2024) 15
Created by Sanjita Mumi | For Educational Use Only Page 2
, AQA GCSE Combined Science: Trilogy | Chemistry | Topic 4: Chemical Changes | Foundation Tier
1 — Learning Objectives
[ ] Describe and use the reactivity series to predict reactions
[ ] Recall and describe reactions of metals with water and dilute acids
[ ] Explain displacement reactions in terms of reactivity
[ ] Explain how metals are extracted from their ores
[ ] Describe the pH scale; define acids and alkalis in terms of H+ and OH- ions
[ ] Describe neutralisation reactions and predict the salt formed
[ ] Describe how to prepare a pure, dry soluble salt (Required Practical)
[ ] Describe electrolysis and predict the products at each electrode
2 — The Reactivity Series
The reactivity series ranks metals (and some non-metals) from most reactive to least reactive. It allows us
to predict reactions, displacement outcomes, and which extraction method to use. Carbon and hydrogen
are included as reference points.
Position Metal Symbol Reacts with Extraction
1 (Most reactive) Potassium K Cold water, acids Electrolysis
2 Sodium Na Cold water, acids Electrolysis
3 Lithium Li Cold water, acids Electrolysis
4 Calcium Ca Cold water, acids Electrolysis
5 Magnesium Mg Steam, acids Electrolysis
6 Aluminium Al Steam, acids Electrolysis
-- CARBON C (Reference point) --
7 Zinc Zn Steam, acids Reduction with carbon
8 Iron Fe Steam, acids Reduction with carbon (blast furnace)
-- HYDROGEN H (Reference point) --
9 Copper Cu Does NOT react Reduction with carbon
10 Silver Ag Does NOT react Found native (free element)
11 (Least reactive) Gold Au Does NOT react Found native (free element)
EXAM TIP: Learn the reactivity series order using: "Please Send Large Cheese Melts And Catches Zombies In
Houses Cold Showers Going" — K, Na, Li, Ca, Mg, Al, (C), Zn, Fe, (H), Cu, Ag, Au.
Created by Sanjita Mumi | For Educational Use Only Page 3
AQA GCSE COMBINED SCIENCE: TRILOGY
CHEMISTRY
Topic 4: Chemical Changes
Foundation Tier | Paper 1
THIS RESOURCE INCLUDES:
Complete Lecture Notes with Diagrams
Worksheet Exercises + Full Answer Key
2023 and 2024 Past Paper Questions
Complete Mark Schemes
Created by: Sanjita Mumi
Name: _______________________________ Class: ______________ Date: ____________
Created by Sanjita Mumi | For Educational Use Only Page 1
,AQA GCSE Combined Science: Trilogy | Chemistry | Topic 4: Chemical Changes | Foundation Tier
TABLE OF CONTENTS
Section Topic Page
1 Learning Objectives 3
2 The Reactivity Series 3
3 Metal Reactions with Water and Acids 4
4 Displacement Reactions 5
5 Extraction of Metals 5
6 pH Scale, Acids and Alkalis 6
7 Neutralisation Reactions 7
8 Making Soluble Salts (Required Practical) 8
9 Electrolysis 9
10 Worksheet Exercises 11
11 Worksheet Answer Key 12
12 2023 Past Paper Questions — Chemical Changes 13
13 2024 Past Paper Questions — Chemical Changes 14
14 Past Paper Mark Schemes (2023 and 2024) 15
Created by Sanjita Mumi | For Educational Use Only Page 2
, AQA GCSE Combined Science: Trilogy | Chemistry | Topic 4: Chemical Changes | Foundation Tier
1 — Learning Objectives
[ ] Describe and use the reactivity series to predict reactions
[ ] Recall and describe reactions of metals with water and dilute acids
[ ] Explain displacement reactions in terms of reactivity
[ ] Explain how metals are extracted from their ores
[ ] Describe the pH scale; define acids and alkalis in terms of H+ and OH- ions
[ ] Describe neutralisation reactions and predict the salt formed
[ ] Describe how to prepare a pure, dry soluble salt (Required Practical)
[ ] Describe electrolysis and predict the products at each electrode
2 — The Reactivity Series
The reactivity series ranks metals (and some non-metals) from most reactive to least reactive. It allows us
to predict reactions, displacement outcomes, and which extraction method to use. Carbon and hydrogen
are included as reference points.
Position Metal Symbol Reacts with Extraction
1 (Most reactive) Potassium K Cold water, acids Electrolysis
2 Sodium Na Cold water, acids Electrolysis
3 Lithium Li Cold water, acids Electrolysis
4 Calcium Ca Cold water, acids Electrolysis
5 Magnesium Mg Steam, acids Electrolysis
6 Aluminium Al Steam, acids Electrolysis
-- CARBON C (Reference point) --
7 Zinc Zn Steam, acids Reduction with carbon
8 Iron Fe Steam, acids Reduction with carbon (blast furnace)
-- HYDROGEN H (Reference point) --
9 Copper Cu Does NOT react Reduction with carbon
10 Silver Ag Does NOT react Found native (free element)
11 (Least reactive) Gold Au Does NOT react Found native (free element)
EXAM TIP: Learn the reactivity series order using: "Please Send Large Cheese Melts And Catches Zombies In
Houses Cold Showers Going" — K, Na, Li, Ca, Mg, Al, (C), Zn, Fe, (H), Cu, Ag, Au.
Created by Sanjita Mumi | For Educational Use Only Page 3
