Catalyst: IGCSE Chemistry Definition

What are catalysts?

In IGCSE chemistry, a catalyst is a substance that speeds up the rate of a chemical reaction without being used up or permanently changed in the process. It works by providing an alternative reaction pathway with a lower activation energy, allowing more particles to react successfully.

Catalysts are widely used in industry to improve efficiency and reduce energy costs, such as iron in the Haber process for ammonia production or platinum in car exhaust systems to reduce pollution. Understanding catalysts is important in IGCSE Chemistry, especially when studying reaction rates and industrial application

Catalyst Revision Resources to Ace Your Exams

For more information about catalysts check out the following resources:

• Catalysts- Revision Notes

• Rates of Reaction- Exam Questions

• Rates of Reaction- Flashcards

Explore our IGCSE Chemistry Revision Resources.