What is a catalyst?

A catalyst is something that changes the rate of a chemical reaction, without being used up during it.

A catalyst provides a different reaction pathway, which requires a lower activation energy than the original pathway. 

This means that the rate of reaction is quicker than it would have been without the prescence of a catalyst. 

Enzymes act as 'biological catalysts' by speeding up the rate of reaction within living organisms. 

Answered by Ryan F. Chemistry tutor

3076 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

What is a mole and why is it useful?


Using the % yield calculation (please state), what is the percentage yield for the reaction of calcium oxide with water to produce calcium hydroxide if the theoretical yield is 4.0g but only 1.5g is produced?


How can an explosion be explained by the different ways molecules are packed together in solids, liquids and gases?


What are the differences between the effects of a catalyst vs reactant concentration on the position of equilibrium/ why?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences