Identify which 2 of the following processes involve an exothermic change: melting, boiling, freezing, deposition and sublimation

An exothermic reaction involves an output of heat, so heat is lost overall. This would mean that boiling and melting are definitely not exothermic as they involving putting in heat. Freezing is an exothermic reaction as it involves losing heat.Sublimation involves changing straight from a solid to a gas, whereas deposition involves changing rapidly from a gas to a solid. Therefore deposition is the other exothermic process, since this also involves losing heat.

Answered by Ellen S. Chemistry tutor

5455 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

The Haber process is used to manufacture ammonia. Explain the optimum conditions for this reaction and why these conditions may not be used in industry


What is the ideal gas equation?


In terms of structure and bonding explain why the boiling point of magnesium is much higher than that of bromine?


Differences between Sn1 and Sn2 reactions


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