Combined Science (Chemistry) · G2 / G3
Sec 4 Combined Science (Chemistry)
The usual Sec 4 half of the Chemistry component of O-Level Combined Science 5086/5088 (SEC G2/G3 from 2027): redox chemistry, patterns in the periodic table with the reactivity series, chemical energetics, rates of reaction, organic chemistry, and maintaining air quality — at Combined Science depth.
- chapters
- 6
- ready now
- 6
- quiz questions
- 120
- exam-style papers
- 2
Start here · Chapter 1Redox Reactions
- Notes · 12 min read
- 20-question quiz
- 12 topical questions
- 30-mark practice paper
Chapters
6 of 6 chapters ready
Theme 1
Chemical Reactions II
Redox chemistry, patterns in the periodic table with the reactivity series, energetics, and rates.
Theme 2
Chemistry in a Sustainable World
Organic chemistry from fuels to polymers, and maintaining air quality.
Topical questions by chapter
One page per chapter: Core, Standard and Challenging questions with model answers.