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HSC Chemistry 27 October 2023
IQ1: What energy changes occur in chemical reactions?
Students:
● conduct practical investigations to measure temperature changes in examples of endothermic and exothermic reactions, including:
– combustion
– dissociation of ionic substances in aqueous solution (ACSCH018, ACSCH037)
● investigate enthalpy changes in reactions using calorimetry and 𝑞 = 𝑚𝑐𝛥𝑇 (heat capacity formula) to calculate, analyse and compare experimental results with reliable secondary-sourced data, and to explain any differences
● construct energy profile diagrams to represent and analyse the enthalpy changes and activation energy associated with a chemical reaction (ACSCH072)
Practical
Practical
This is the practical for this lesson.
Dissolution Mod 4.docx
Additional Resource
Additional Resource
Desmos is an interactive graph generator, which may also be used to develop energy profile diagrams.
OVERLAP NOTICE
OVERLAP NOTICE
Module 3 IQ3 already introduced the terms endo and exothermic and energy profile diagrams when discussing activation energy.
The new part here is about relating it to dissolution reactions.
COL HARRISON VIDEOS
COL HARRISON VIDEOS
Endo / Exo
Endo / Exo
Dissolution
Dissolution
Energy Profile Diagrams
Energy Profile Diagrams
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