O-Level Chemistry Video: Use of Catalyst on Rate of Reaction


In the previous blog post, we have watched a video on 5 factors that can affect the rate of a chemical reaction.

Today, we shall discuss the role of a suitable catalyst and how it increases the rate of a chemical reaction.

Many of my students in our Sec 4 GCE O-Level Pure Chemistry tuition classes always share with us that their friends have difficulty to score full marks in Chemistry Examinations whenever they were being asked about how a catalyst work to increase the rate of reaction.

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Length of video: 7.41 mins

Direct link: https://youtu.be/rqozg7_7pBo

Some key points from the video:

  • A catalyst is a substance which increases the speed of a chemical reaction and remains chemically unchanged at the end of the reaction
  • A catalyst increases the speed of a reaction by providing an alternative pathway with a lower activation energy
  • In a catalysed reaction, more colliding particles possess energy equal to or greater than the activation energy and hence the speed of reaction is higher

I hope you find the content easy for your understanding and if you have any questions, leave me a comment below.

Feel free to share this video with your friends who needs help in mastering Chemistry.

PS: You can do a search on the top right hand corner for more discussions and questions on “Rate of Reactions” or select from the suggested blog posts under “Related Articles” below.

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Many people talked about teaching Chemistry, I simply LOVE it. I am a passionate Chemistry Coach based in Singapore, Southeast-Asia and aspire to be one of the most dynamic, powerful and humorous speakers in Asia. My 18+ years of coaching experience has equipped me to understand the true reasons why students are not able to perform well in Chemistry, and allow me to structure my teaching methodology to cater to different levels of learners. If you have found this post useful, please share it with your friends. I would really appreciate it! Sean Chua

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