ISC 227 covers 22 topics. StudyPath paces them into daily study
sessions that finish before your exam date, with practice questions and worked
answers for each one.
1 explain the meaning of enthalpy changes during a relation
2 explain exothermic and endothermic reactions and their reaction to the sign of AH
3 illustrate Hess’s law using simple examples e.g formation of NaCL or HCI
4 explain enthalpies of formations, combustions and neutralizations
5 explain enthalpy chances in terms of internal energy.
0 Kinetics
1 define the rate of a reaction, explain factors which influence the rate include
2 demonstrate the meaning of order of `reaction’ (distinguished from molecularity)
3 explain energy of activation in qualitative terms
4 give examples of photochemical reactions such as chlorine with hydrogen;
0 Catalysis/Enzymes Catalysts
1 identify catalysts as substances which change the rate of reaction
2 distinguish the action of homogenous and heterogeneous catalysts
3 explain in general terms the importance of enzymes as catalysts in biological processes
4 describe the effect of the activity of enzymes of yeast in brewing, wine making and the
5 investigate the effect of heat on the activity of enzymes.
0 Equilibrium
1 demonstrate that chemical equilibrium is dynamic
2 identify and discuss the factors which affect the position of equilibrium (temperature,
3 demonstrate how to find the equilibrium constant of a reaction given the concentration of
4 apply Le Chaterlier’s principle to industrial processes e.g. Haber synthesis of ammonia
A sample from this course
One topic, as StudyPath teaches it.
0 Energy of Reactions
Energy of reactions deals with the heat changes that accompany chemical processes and the meaning of quantities such as enthalpy change. For exams, you must master how to tell whether a reaction absorbs or releases energy, how to represent reaction energy changes, and how to use basic energy relationships such as Hess's law correctly.
What you get for ISC 227
Every topic above, split into sessions and dated against your exam.
Practice questions per session, with answers that explain themselves.
Offline reading — the whole course is a few hundred KB on your phone.
An AI tutor that answers questions using this course's own material.