L7. Catalysts and Rate of Reaction

7 Catalysts S: Revisit speeding up a chemical reaction dating video. Discuss what a match maker is.

I: What is a catalyst?
- Demonstrate elephants toothpaste.

M: Get pupils to write what they think a catalyst is in their books then write actual definition. Discuss catalyst and their use in industry. HA discuss the advantages and disadvantages of using catalysts in industry.

Practical: which is the best catalyst for decomposition of hydrogen peroxide. Remove bung of gas syringe if produces lots of gas and syringe is fully extended to minimise the risk of explosion.
Answer questions- appropriate for ability.

P: Anagrams of key words.

HW: Research task on catalyst- can change levels to make appropriate for class.




Elephants toothpaste












Conical flask, dilute Hydrogen peroxide, gas syringe, clamp stand.
Catalyst: diced potato, manganese dioxide (manganese (VI) oxide) copper oxide, iron oxide and diced celery.