---

​Welcome to Topic 2 - AMOUNT OF SUBSTANCE

Topic 2 specification content
Topic 2 notes
​Topic 2 videos

---

Topic 2 Assessed Homework (mark scheme)
Topic 2 Test (mark scheme)

---

Topic 2 Exercise 1 - using moles and reacting masses
Topic 2 Exercise 2 - solutions
Topic 2 Exercise 3 - ideal gas equation
Topic 2 Exercise 4 - empirical and molecular formulae
Topic 2 Exercise 5 - ionic equations
Topic 2 Exercise 6 - more complex calculations
Answers to Topic 2 Exercises

---

Recommended Videos

​Video tutorials created by A* students covering the new OCR, AQA and Edexcel spec are a great way to consolidate your revision and prepare you for your exams.

---

Recommended Books

​Books can be a great way of aiding your learning. The books shown below are recommended by teachers and students. Click on the books to find out more.

---

Practical Tasks
Practical 1 - preparing a standard solution from a solid (alternative)
Practical 2- a simple titration (alternative)
Practical 3 - determining the relative molecular mass of an acid by titration (Required Practical 1)
Practical 4 - measuring gas volumes
Practical 5 - gravimetic analysis
Summary of Topic 2 Practical Skills