Answers>Chemistry>GCSE>Article

What is a catalyst?

A substance that provides a convenient pathway for a reaction to occur requiring less energy than the activation energy of the reaction.

TD

Answered by Tutor598438 D. • Chemistry tutor

1748 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

Define an exothermic reaction.

Describe what you would see when a piece of potassium is placed on water. Why does this happen?

Calculate the percentage by mass of nitrogen in an ammonia molecule (NH3) . Take the relative atomic masses of hydrogen and nitrogen to be 1 and 14 respectively.

What is the mass (in grams) of 0.1 moles of CaCO3?

We're here to help

+44 (0) 203 773 6020

Company Information

Popular Requests

Maths tutor Chemistry tutor Physics tutor Biology tutor English tutor GCSE tutors A level tutors IB tutors Physics & Maths tutors Chemistry & Maths tutors GCSE Maths tutors

CLICK CEOP

Internet Safety

Payment Security

Cyber

Essentials

MyTutor is part of the IXL family of brands:

IXL

Comprehensive K-12 personalized learning

Rosetta Stone

Immersive learning for 25 languages

Wyzant

Trusted tutors for 300 subjects

Education.com

35,000 worksheets, games, and lesson plans

Vocabulary.com

Adaptive learning for English vocabulary

Emmersion

Fast and accurate language certification

Thesaurus.com

Essential reference for synonyms and antonyms

Dictionary.com

Comprehensive resource for word definitions and usage

SpanishDictionary.com

Spanish-English dictionary, translator, and learning resources

FrenchDictionary.com

French-English dictionary, translator, and learning

Ingles.com

Diccionario ingles-espanol, traductor y sitio de apremdizaje

ABCya

Fun educational games for kids

© 2025 by IXL Learning