Redox and photosynthesis: A simple concept, a complicated procedure

What is the relationship between redox and photosynthesis, and is it as simple as counting the oxidation numbers? Tease your brain with…

Ask a chemist: Were dinosaurs warm-blooded?

Isotopes are chemically similar but not identical. Their subtle difference makes them an excellent tool to find out if dinosaurs were warm…

Green chemistry: NEWSand and NEWOil

The chemistry behind how old things are made new

Negative oxygen ion face mask?

Unmask the truth about "negative oxygen ion face mask"

Purifying water

Read about the Singapore water story, as told through the lens of a chemist, and learn the separation techniques and chemicals involved in…

O Level titration TYS questions

Don't let the difficult question from the 2014 paper be your endpoint. Overcome it here!

The chemistry of rocket science

Learn how combustion and ionisation power rockets

Oxylithe, the oxygen cake of the 1900s

Practise data-based questions as you travel back in time to find out how chemists overcame safety and design problems to deliver fresh air…